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I just bought a new high end motherboard from Asus, the one that has the 955
chipset. It has an eSATA port in the back. I have been doing some searching and was surprised to find so little info on this. From what I have uncovered, eSATA is 100% hot pluggable. That means if I can connect to this port an eSATA external enclosure with a SATA drive inside, while the PC is on, I can turn off the external harddrive like I would with USB and Firewire external drives. However, I cannot find any info on how does XP handle eSATA external enclosures. In fact, I cannot even find an eSATA eternal harddrive enclosure on the Web shopping sites. Does XP treat an eSATA drive as external USB/Firewire drives in terms of hot pluggability? That is, there will be an icon with the green arrow in the System Tray when I plug in an eSATA drive through which I can use to tell XP that I am about to unplug the eSATA drive from the motherboard? |
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#2
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"Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message
news:021D89D6-F976-493A-B17D-631E4764E2DD@microsoft.com... >I just bought a new high end motherboard from Asus, the one that has the >955 > chipset. It has an eSATA port in the back. I have been doing some > searching and was surprised to find so little info on this. From what I > have uncovered eSATA is 100% hot pluggable. That means if I can connect to > this port an eSATA external enclosure with a SATA drive inside, while the > PC is on, I can turn off the external harddrive like I would with USB and > Firewire external drives. However, I cannot find any info on how does XP > handle eSATA external enclosures. In fact, I cannot even find an eSATA > eternal harddrive enclosure on the Web shopping sites. Does XP treat an > eSATA drive as external USB/Firewire drives in terms of hot pluggability? > That is, there will be an icon with the green arrow in the System Tray > when I plug in an eSATA drive through which I can use to tell XP that I > am about to unplug the eSATA drive from the motherboard? Techmanblues: The eSATA ("e" for external) port is a wonderful feature on your ASUS motherboard. By connecting an ordinary SATA HD to this port (but note the eSATA port needs a special eSATA connector on the signal/data cable that will be connected to it - see below) you now have an "external" device that's treated as an *internal* device by the system. Think of the advantages of this. For the first time in an XP environment, you will be able to directly install the XP OS onto an "external" SATA drive and that drive will be bootable. The more common scenario is that you'll be able to clone the contents of your internal day-to-day working HD (PATA or SATA) - using a disk imaging program, e.g., Ghost and the drive will be bootable - a capability that has eluded us with USB/Firewire external hard drives up to now. What better backup system could we hope for? Another advantage of using an "external" SATA HD is its speed. It will operate substantially at the same speed as an internal SATA HD and thus be considerably faster than a USB/Firewire EHD. AFAIK, the eSATA port does allow for "hot-swapping" of connected devices assuming the device itself has no problem with this capability. Again, AFAIK, SATA II hard drives meeting the 3 Gb/sec specification will support hot-swapping as long as the motherboard provides this capability. Still another advantage of the eSATA port is that it supports the latest SATA 3 Gb/sec specification. So you could connect a normal SATA HD to the eSATA port without the absolute necessity of containing that drive in any special enclosure. Theoretically you could plop it in a cigar box or even run the SATA data/signal cable directly to a bare drive. Not the most desirable thing to do for the average user, but it can be done. We generally set up our desktop computers with mobile racks (2) to contain our removable hard drives. It's a hardware arrangement that we strongly recommend for many desktop computer users. So we usually contain the "external" SATA drive in one of the removable trays that are also used in the mobile racks. Now, what about the power to that SATA "external" drive? You simply use the power from your computer's power supply. There's absolutely no need for an external power supply. So that's another advantage of this eSATA device, yes? Unfortunately the rub here is that ASUS did not provide an external power connector alongside the eSATA port. Why they didn't do so is a complete mystery to us. Actually it's simple enough for a user to run a power cable from your PS to the external SATA drive, but it does mean that you have to snake it out probably through one of the slots on the backplane of the computer's case. BTW, there's another device we came across that users may be interested in to connect an external SATA HD. It's called the SATAPOWPLAT1, manufactured or distributed by StarTech. It's available from http://www.cwol.com for about $19 (incl shipping) - at least the last time I looked. buy.com shows it for much cheaper, but it's never in stock. I assume the device is also available from other online vendors. This device is simply attached to the I/O bracket on the computer case's backplane. It comes with two external connectors - the SATA data connector and the 15-pin SATA power connector. Internally (the other side of its slot plate) is, of course, the SATA data connector and the normal 4-pin Molex power plug. So it's a simple matter to connect the device to one of the power leads of your PS. Why ASUS didn't use the same simple configuration with its eSATA connector is beyond me. Note that the SATA data connector on this SATAPOWPLAT1 device is a standard SATA data connector; it is not an eSATA connector. As I previously mentioned, the eSATA port connects to a eSATA data connector cable. One of the sources for this type of cable (comes in 1 meter and 2 meter lengths) is http://www.macgurus.com/productpages...SATACables.php Item MC39EX-AB I guess it's also available from other sources. Unfortunately it's quite expensive for a SATA data cable (although it is shielded) - about $25 for the 1 meter cable. I'm not aware of any motherboard manufacturer aside from ASUS that has equipped their latest motherboards with the eSATA port. If anyone has information about this I would like to hear about it. And I'm similarly not aware of any laptop/notebook computers that are equipped with this feature. And it would seem a most desirable feature to be incorporated in those latter machines, would it not? It seems to me the eSATA port is the "wave of the future" that's here right now since it has the tremendous advantages of treating an "external" device as a normal internal device together with providing superior performance when compared with USB/Firewire external hard drives. I would think that more & more motherboards will come equipped with the eSATA port (as well as an external power connector port which the present ASUS motherboard lacks as noted above). I trust this information will be useful to you and others who might be contemplating this type of device. Anna |
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#3
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Thank you for such a detailed reply post. Has anyone actually used one of
these eSATA ports to connect to a SATA drive whether in a naked configuration (just plug in the SATA drive without any enclosure that has a SATA to eSATA adapter)? I guess I am looking for people who have actually done it. Reading about specs is all and fine, but does it work in the real world is all that matters. Basically there are several ways you can connect a SATA drive to the computer externally. 1) The most basic way is a SATA drive connects to a SATA connector on the motherboard. This is no different than having the drive inside the chasis. The data cable simply runs through one of the expansion slits. XP will recognize this drive as an internal drive. Even though the SATA spec says SATA drives are hot plugable, I have not worked up the courage to turn off the drive and turn the power to the drive on again while XP is running. But a friend of mine told me that one time, he accidentally unpluged the power to the drive while the computer (XP) is on, and XP failed to re-associate with the drive. I believe that SATA (at least SATA 150), is not 100% hot pluggable. 2) Quasi-external connection. I found in a computer store this device that creates a SATA interface on one of the adapter card slit on the case. It's pretty simple actually. You would mount this adapter to one of the slits. The internal-face would connect to one of the SATA connectors on the motherboard and the outward facing side would be a regular SATA connector. Basically it's an extension cord for the SATA connector on the motherboard. Physically it looks nice and tidy, but logically, it's no different than the first scenario. XP will treat this connection as an internal SATA drive connection and therefore it will inherit all the quasi-hotpluggable characteristics. Vantec sells a PCI SATA controller card that has one internal SATA connector and one external SATA connector. The external one acts like the dumb extension cord mentioned above, except with this PCI card, you do not consume a SATA connector on the motherboard. 3) Half and half. Let's say there is a PCI adapter that has a bunch of internal SATA connectors on the card and one eSATA connector on the outside. When you plug a SATA drive into this eSATA connector, I assume it will work and XP will recognize the external drive. But my question is: will XP recognize the external drive in this half-and-half configuration as a true external drive like it were connected through a USB/Firewire enclosure and the little green arrow icon shows up in the System Tray? If this is the case, then the external SATA drive will be 100% hotpluggable from the perspective of XP. 4) Full eSATA compliance. Now imagine the 3rd scenario, but now the SATA drive is inside an enclosure that has eSATA on the outside. In this scenario, the contact points between the external drive and the computer is pure eSATA. I am sure that this will be 100% hotplugable even when the SATA drive in the enclosure is not SATA 300 AND the SATA connector inside the computer on the motherboard is also SATA 150. Basically the SATA to eSATA adapter acts like middleware to make sure that the connection to the external drive is 100% hotplugable. I have read extensively on the eSATA spec. I am surprised however, so little info is available on the hotplugability issue. It seems like the people who create the SATA technology places hotplugability of SATA drives as a non-priority. But in practice as you can imagine, think of the possibilties if a SATA drive that can transfer data at 300MB/sec and is hotplugable? Think of all those hours people spend backing up data to extenal drives using USB and firewire? Or tape? Working as a technician, I have spent so much time waiting to backup people's data to an USB external drive before reformatting their old drive to re-install Windows that I pray for a faster transfer. Almost all the computers that I have worked on have tons of iTune stuff in the gigabyte range. It's riduculous that I have to wait 30 minutes to transfer these music files to a safe place before I start working on the system. I charge people by the hour so I am sure some people think I simply dishonestly stretch the clock while the tranfer is taking place. If eSATA is backward compatible with SATA, then shouldn't all SATA drives from now on should have the "non-L shape" eSATA connector on it? This way, if this drive is connected to a SATA connector on the motherboard, the BIOS and XP will treat it as an internal drive. But if you plug this drive to an eSATA connector like the one found on my ASUS motherboard, then XP will treat it as a 100% hotplugable external drive. In other words, by equipting all SATA harddrives with an eSATA interface, you have the flexibilty of internalize or externalize the drive without the need for all these clumsy SATA-to-eSATA adapters. I think all drive and motherboard manufacurers should get together and agree on this. "Anna" wrote: > "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message > news:021D89D6-F976-493A-B17D-631E4764E2DD@microsoft.com... > >I just bought a new high end motherboard from Asus, the one that has the > >955 > > chipset. It has an eSATA port in the back. I have been doing some > > searching and was surprised to find so little info on this. From what I > > have uncovered eSATA is 100% hot pluggable. That means if I can connect to > > this port an eSATA external enclosure with a SATA drive inside, while the > > PC is on, I can turn off the external harddrive like I would with USB and > > Firewire external drives. However, I cannot find any info on how does XP > > handle eSATA external enclosures. In fact, I cannot even find an eSATA > > eternal harddrive enclosure on the Web shopping sites. Does XP treat an > > eSATA drive as external USB/Firewire drives in terms of hot pluggability? > > That is, there will be an icon with the green arrow in the System Tray > > when I plug in an eSATA drive through which I can use to tell XP that I > > am about to unplug the eSATA drive from the motherboard? > > > Techmanblues: > The eSATA ("e" for external) port is a wonderful feature on your ASUS > motherboard. By connecting an ordinary SATA HD to this port (but note the > eSATA port needs a special eSATA connector on the signal/data cable that > will be connected to it - see below) you now have an "external" device > that's treated as an *internal* device by the system. > > Think of the advantages of this. For the first time in an XP environment, > you will be able to directly install the XP OS onto an "external" SATA drive > and that drive will be bootable. The more common scenario is that you'll be > able to clone the contents of your internal day-to-day working HD (PATA or > SATA) - using a disk imaging program, e.g., Ghost and the drive will be > bootable - a capability that has eluded us with USB/Firewire external hard > drives up to now. What better backup system could we hope for? > > Another advantage of using an "external" SATA HD is its speed. It will > operate substantially at the same speed as an internal SATA HD and thus be > considerably faster than a USB/Firewire EHD. > > AFAIK, the eSATA port does allow for "hot-swapping" of connected devices > assuming the device itself has no problem with this capability. Again, > AFAIK, SATA II hard drives meeting the 3 Gb/sec specification will support > hot-swapping as long as the motherboard provides this capability. > > Still another advantage of the eSATA port is that it supports the latest > SATA 3 Gb/sec specification. > > So you could connect a normal SATA HD to the eSATA port without the absolute > necessity of containing that drive in any special enclosure. Theoretically > you could plop it in a cigar box or even run the SATA data/signal cable > directly to a bare drive. Not the most desirable thing to do for the average > user, but it can be done. We generally set up our desktop computers with > mobile racks (2) to contain our removable hard drives. It's a hardware > arrangement that we strongly recommend for many desktop computer users. So > we usually contain the "external" SATA drive in one of the removable trays > that are also used in the mobile racks. > > Now, what about the power to that SATA "external" drive? You simply use the > power from your computer's power supply. There's absolutely no need for an > external power supply. So that's another advantage of this eSATA device, > yes? Unfortunately the rub here is that ASUS did not provide an external > power connector alongside the eSATA port. Why they didn't do so is a > complete mystery to us. Actually it's simple enough for a user to run a > power cable from your PS to the external SATA drive, but it does mean that > you have to snake it out probably through one of the slots on the backplane > of the computer's case. > > BTW, there's another device we came across that users may be interested in > to connect an external SATA HD. It's called the SATAPOWPLAT1, manufactured > or distributed by StarTech. It's available from http://www.cwol.com for > about $19 (incl shipping) - at least the last time I looked. buy.com shows > it for much cheaper, but it's never in stock. I assume the device is also > available from other online vendors. > > This device is simply attached to the I/O bracket on the computer case's > backplane. It comes with two external connectors - the SATA data connector > and the 15-pin SATA power connector. Internally (the other side of its slot > plate) is, of course, the SATA data connector and the normal 4-pin Molex > power plug. So it's a simple matter to connect the device to one of the > power leads of your PS. Why ASUS didn't use the same simple configuration > with its eSATA connector is beyond me. Note that the SATA data connector on > this SATAPOWPLAT1 device is a standard SATA data connector; it is not an > eSATA connector. > > As I previously mentioned, the eSATA port connects to a eSATA data connector > cable. One of the sources for this type of cable (comes in 1 meter and 2 > meter lengths) is http://www.macgurus.com/productpages...SATACables.php > Item MC39EX-AB > I guess it's also available from other sources. Unfortunately it's quite > expensive for a SATA data cable (although it is shielded) - about $25 for > the 1 meter cable. > > I'm not aware of any motherboard manufacturer aside from ASUS that has > equipped their latest motherboards with the eSATA port. If anyone has > information about this I would like to hear about it. And I'm similarly not > aware of any laptop/notebook computers that are equipped with this feature. > And it would seem a most desirable feature to be incorporated in those > latter machines, would it not? > > It seems to me the eSATA port is the "wave of the future" that's here right > now since it has the tremendous advantages of treating an "external" device > as a normal internal device together with providing superior performance > when compared with USB/Firewire external hard drives. I would think that > more & more motherboards will come equipped with the eSATA port (as well as > an external power connector port which the present ASUS motherboard lacks as > noted above). > > I trust this information will be useful to you and others who might be > contemplating this type of device. > Anna > > > |
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#4
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>> "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message
>> news:021D89D6-F976-493A-B17D-631E4764E2DD@microsoft.com... >> >I just bought a new high end motherboard from Asus, the one that has the >> >955 >> > chipset. It has an eSATA port in the back. I have been doing some >> > searching and was surprised to find so little info on this. From what I >> > have uncovered eSATA is 100% hot pluggable. That means if I can connect >> > to >> > this port an eSATA external enclosure with a SATA drive inside, while >> > the >> > PC is on, I can turn off the external harddrive like I would with USB >> > and >> > Firewire external drives. However, I cannot find any info on how does >> > XP >> > handle eSATA external enclosures. In fact, I cannot even find an eSATA >> > eternal harddrive enclosure on the Web shopping sites. Does XP treat an >> > eSATA drive as external USB/Firewire drives in terms of hot >> > pluggability? >> > That is, there will be an icon with the green arrow in the System Tray >> > when I plug in an eSATA drive through which I can use to tell XP that >> > I >> > am about to unplug the eSATA drive from the motherboard? > "Anna" wrote: >> Techmanblues: >> The eSATA ("e" for external) port is a wonderful feature on your ASUS >> motherboard. By connecting an ordinary SATA HD to this port (but note the >> eSATA port needs a special eSATA connector on the signal/data cable that >> will be connected to it - see below) you now have an "external" device >> that's treated as an *internal* device by the system. >> >> Think of the advantages of this. For the first time in an XP environment, >> you will be able to directly install the XP OS onto an "external" SATA >> drive and that drive will be bootable. The more common scenario is that >> you'll be able to clone the contents of your internal day-to-day working >> HD (PATA or SATA) - using a disk imaging program, e.g., Ghost and the >> drive will be bootable - a capability that has eluded us with >> USB/Firewire external hard drives up to now. What better backup system >> could we hope for? >> >> Another advantage of using an "external" SATA HD is its speed. It will >> operate substantially at the same speed as an internal SATA HD and thus >> be considerably faster than a USB/Firewire EHD. >> >> AFAIK, the eSATA port does allow for "hot-swapping" of connected devices >> assuming the device itself has no problem with this capability. Again, >> AFAIK, SATA II hard drives meeting the 3 Gb/sec specification will >> support hot-swapping as long as the motherboard provides this capability. >> >> Still another advantage of the eSATA port is that it supports the latest >> SATA 3 Gb/sec specification. >> >> So you could connect a normal SATA HD to the eSATA port without the >> absolute necessity of containing that drive in any special enclosure. >> Theoretically you could plop it in a cigar box or even run the SATA >> data/signal cable directly to a bare drive. Not the most desirable thing >> to do for the average user, but it can be done. We generally set up our >> desktop computers with mobile racks (2) to contain our removable hard >> drives. It's a hardware arrangement that we strongly recommend for many >> desktop computer users. So we usually contain the "external" SATA drive >> in one of the removable trays that are also used in the mobile racks. >> >> Now, what about the power to that SATA "external" drive? You simply use >> the power from your computer's power supply. There's absolutely no need >> for an external power supply. So that's another advantage of this eSATA >> device, yes? Unfortunately the rub here is that ASUS did not provide an >> external power connector alongside the eSATA port. Why they didn't do so >> is a complete mystery to us. Actually it's simple enough for a user to >> run a >> power cable from your PS to the external SATA drive, but it does >> mean that you have to snake it out probably through one of the slots on >> the backplane of the computer's case. >> >> BTW, there's another device we came across that users may be interested >> in to connect an external SATA HD. It's called the SATAPOWPLAT1, >> manufactured or distributed by StarTech. It's available from >> http://www.cwol.com for about $19 (incl shipping) - at least the last >> time I looked. buy.com shows it for much cheaper, but it's never in >> stock. I assume the device is also available from other online vendors. >> >> This device is simply attached to the I/O bracket on the computer case's >> backplane. It comes with two external connectors - the SATA data >> connector and the 15-pin SATA power connector. Internally (the other side >> of its slot plate) is, of course, the SATA data connector and the normal >> 4-pin Molex power plug. So it's a simple matter to connect the device to >> one of the >> power leads of your PS. Why ASUS didn't use the same simple >> configuration with its eSATA connector is beyond me. Note that the SATA >> data connector on this SATAPOWPLAT1 device is a standard SATA data >> connector; it is not an eSATA connector. >> >> As I previously mentioned, the eSATA port connects to a eSATA data >> connector cable. One of the sources for this type of cable (comes in 1 >> meter and 2 meter lengths) is >> http://www.macgurus.com/productpages...SATACables.php >> Item MC39EX-AB >> I guess it's also available from other sources. Unfortunately it's quite >> expensive for a SATA data cable (although it is shielded) - about $25 for >> the 1 meter cable. >> >> I'm not aware of any motherboard manufacturer aside from ASUS that has >> equipped their latest motherboards with the eSATA port. If anyone has >> information about this I would like to hear about it. And I'm similarly >> not >> aware of any laptop/notebook computers that are equipped with this >> feature. And it would seem a most desirable feature to be incorporated in >> those latter machines, would it not? >> >> It seems to me the eSATA port is the "wave of the future" that's here >> right >> now since it has the tremendous advantages of treating an >> "external" device as a normal internal device together with providing >> superior performance when compared with USB/Firewire external hard >> drives. I would think that more & more motherboards will come equipped >> with the eSATA port (as well as an external power connector port which >> the present ASUS motherboard lacks as noted above). >> >> I trust this information will be useful to you and others who might be >> contemplating this type of device. >> Anna "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message news:6E906A49-F686-4484-81B7-9B249BB34C96@microsoft.com... > Thank you for such a detailed reply post. Has anyone actually used one of > these eSATA ports to connect to a SATA drive whether in a naked > configuration > (just plug in the SATA drive without any enclosure that has a SATA to > eSATA > adapter)? I guess I am looking for people who have actually done it. > Reading > about specs is all and fine, but does it work in the real world is all > that > matters. > > Basically there are several ways you can connect a SATA drive to the > computer externally. > > 1) The most basic way is a SATA drive connects to a SATA connector on the > motherboard. This is no different than having the drive inside the chasis. > The data cable simply runs through one of the expansion slits. XP will > recognize this drive as an internal drive. Even though the SATA spec says > > SATA drives are hot plugable, I have not worked up the courage to turn > off > the drive and turn the power to the drive on again while XP is running. > But a friend of mine told me that one time, he accidentally unpluged the > power to > the drive while the computer (XP) is on, and XP failed to > re-associate with > the drive. I believe that SATA (at least SATA 150), is > not 100% hot pluggable. > > 2) Quasi-external connection. I found in a computer store this device that > creates a SATA interface on one of the adapter card slit on the case. It's > pretty simple actually. You would mount this adapter to one of the slits. > The > internal-face would connect to one of the SATA connectors on the > motherboard and the outward facing side would be a regular SATA connector. > Basically it's an extension cord for the SATA connector on the > motherboard. Physically it looks nice and tidy, but logically, it's no > different than the first scenario. XP will treat this connection as an > internal SATA drive connection and therefore it will inherit all the > quasi-hotpluggable characteristics. > > Vantec sells a PCI SATA controller card that has one internal SATA > connector and one external SATA connector. The external one acts like the > dumb extension cord mentioned above, except with this PCI card, you do not > consume a SATA connector on the motherboard. > > 3) Half and half. Let's say there is a PCI adapter that has a bunch of > internal SATA connectors on the card and one eSATA connector on the > outside. When you plug a SATA drive into this eSATA connector, I assume it > will work and XP will recognize the external drive. But my question is: > will XP recognize the external drive in this half-and-half configuration > as a true > external drive like it were connected through a USB/Firewire enclosure and > the little green arrow icon shows up in the System Tray? If this is the > case, then the external SATA drive will be 100% hotpluggable from the > perspective of XP. > > 4) Full eSATA compliance. Now imagine the 3rd scenario, but now the SATA > drive is inside an enclosure that has eSATA on the outside. In this > scenario, the contact points between the external drive and the computer > is pure eSATA. > I am sure that this will be 100% hotplugable even when the SATA drive in > the enclosure is not SATA 300 AND the SATA connector inside the computer > on the motherboard is also SATA 150. Basically the SATA to eSATA adapter > acts like middleware to make sure that the connection to the external > drive is 100% hotplugable. > > I have read extensively on the eSATA spec. I am surprised however, so > little info is available on the hotplugability issue. It seems like the > people who > create the SATA technology places hotplugability of SATA > drives as a > non-priority. But in practice as you can imagine, think of the > possibilties > if a SATA drive that can transfer data at 300MB/sec and is hotplugable? > Think of all those hours people spend backing up data to extenal drives > using USB and firewire? Or tape? > > Working as a technician, I have spent so much time waiting to backup > people's data to an USB external drive before reformatting their old drive > to re-install Windows that I pray for a faster transfer. Almost all the > computers that I have worked on have tons of iTune stuff in the gigabyte > range. It's riduculous that I have to wait 30 minutes to transfer these > music > files to a safe place before I start working on the system. I charge > people > by the hour so I am sure some people think I simply dishonestly stretch > the > clock while the tranfer is taking place. > > If eSATA is backward compatible with SATA, then shouldn't all SATA drives > from now on should have the "non-L shape" eSATA connector on it? This way, > if this drive is connected to a SATA connector on the motherboard, the > BIOS and XP will treat it as an internal drive. But if you plug this drive > to an eSATA connector like the one found on my ASUS motherboard, then XP > will treat it as a 100% hotplugable external drive. In other words, by > equipting all SATA harddrives with an eSATA interface, you have the > flexibilty of internalize or externalize the drive without the need for > all these clumsy SATA-to-eSATA adapters. I think all drive and motherboard > manufacurers should get together and agree on this. Techmanblues: Re your opening comment: did I not make it clear in my original response to your query that I've worked with this ASUS motherboard and the eSATA connector? The information I provided was based on my experience with this device, limited as it is. It wasn't theoretical. If I didn't make that clear then, I'm making it clear now! You're absolutely correct that one *could* connect a SATA HD residing outside the computer case *directly* to an available SATA connector on the motherboard - assuming there *was* an available SATA connector for this additional connection. But having an eSATA port makes the connection that much cleaner, although as I previously stated, ASUS's lack of providing an external SATA power connector is most annoying, to say the least. The eSATA connector also makes for a more secure connection from the computer to the external drive. As you probably know, the current SATA data connectors have come under a great deal of criticism because they're not as secure as they might be. Another built-in advantage of the eSATA connector is that it supports the "hot-swapping" capability provided by the motherboard. The type of device you refer to under 2) is another workable alternative. I haven't seen any though that was equipped with the eSATA connector, just the usual SATA data connector. Does the Vantec model you mention come with a eSATA connector? I'm really not sure I quite understand your comments in 3). If the adapter device you speak of contains an eSATA connector, then a SATA HD connected to it and residing outside the case will be detected by the system as an internal SATA HD. There would be *no* reason why the system would treat the drive "as a true external drive like it were connected through a USB/Firewire enclosure". Similarly there would no reason for "the little green arrow icon (to) show up in the System Tray". You must keep in mind that under the circumstances we've been discussing, this "external" SATA HD is treated as an internal HD by the system. And that's the beauty of all this, is it not? With reference to your comments in 4)... Based on the (admittedly) limited experience we've had with the ASUS P5WD2 and its eSATA connector, the device supports hot-plugging. We tried it with a number of different drives - WD, Hitachi, and Samsung, and all of them were "hot-pluggable" capable. Again, my understanding is that the eSATA connector supports this capability with SATA 300 Gb/sec drives. We most certainly agree with your comments about the desirability of having faster data transfer rates using external devices. And the use of the "external" SATA HDs that we've been discussing makes this a reality, does it not? Especially when you compare it with USB/Firewire external hard drives. And we're in agreement with your comments re the effectiveness of the eSATA data connectors as compared to the original/current SATA data connectors. But, alas, we don't think there's going to be any wholesale movement to these eSATA connectors in the near term. It's a pity they weren't developed/accepted earlier. C'est la vie. Anna |
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Well, it's best to first define a few terms so that we are clear on what we
mean by all these confusing terminology. Feel free to modify the definition as you see fit. SATA: a general umbrella term describing the technology that is to replace the IDE PATA technology which as we all have known all these years is not hot plugable. SATA drive: a harddrive that uses the SATA interface. SATA150 drive: a SATA harddrive that is the first to use the SATA technology. It has these maddingly easy to break off data cable connector. It runs at a theoretical speed of 150MB/sec. By far, this type of drive is the most prevalent of all the SATA drives in the market. SATA150NCQ drive: a SATA150 drive that also supports NCQ. With NCQ, the readhead is more efficient when it comes to accessing the data. Basically, it means that the readhead does not have to move too much to get to the data on the platters. This not only speeds up the data access but incurs less wear and tear on the drive. Not to mention the reduced power consumption. SATAII: an update technology to the original SATA spec. This is perhaps the most confusing of all the terminology that drive manufacturers unlease upon the consumers. Even I am confused as to what the heck does it mean. From what I can tell, SATAII means that "either NCQ support or 300MB/sec." SATAII drive: a drive that either has NCQ or 300MB/sec. But not necessaity both. SATA300 drive: a drive that may or may not support NCQ, but does transfer at 300MB/sec. SATA2: I still am not sure the relationship between this and SATAII. Sometimes drive manufacturers and SATA controller adapter cards like Promise use the Roman numeral and sometimes they use the numeric value of 2. One has to really dig deep in the product spec to find out what the drive really can do (supposedly). SATA2.5: This is where the SATA governing body put its foot down. Any drive or controller cards that claim to be SATA2.5 compliant have to support at a minimum three things: 300MB/sec tranfer rate, NCQ, and hotplugability. So far, I have not seen a SATA product that has the SATA2.5 logo on it. Hotplugable: the ability to plug and unplug an external device (not necessarily only harddrives) while the computer is ON. However, you should tell the OS that you are about to turn off the power to the external device or in case of a USB flash drive, about to yank it out from the USB connector. eSATA: This refers to a technology that is used to connect any SATA drives to the motherboard or controller card in an external manner. Physically, the eSATA connector is different. It does not have the L-shape. I am not clear on the relationship between eSATA and SATA2.5. What I am clear is eSATA has to be hotplugable because that is the whole point of an external drive, right? Because my interest in faster transfer speed is as much as the ability to power down an external harddrive while the computer is still on, I want to know if any SATA drive or enclosure can do this. I deal with so much data transfer not only as a tech but as a user who does video editing, so the faster I can move data from an internal drive to an external one the better. If I miss any terms, please fill in the gaps. Ok, to answer your first question about the Vantec PCI card. No, the external connector on that card is just like the connector on the inside of the card. Both are regular SATA with the L-shape. Therefore, that external connector is more of a convenience than any different type connectivity like eSATA. I use it myself to connect my AMS Venus SATA external harddrive enclosure with a SATA drive in it. I have never turned off this external drive/enclosure unless I have shutdown the computer. And yes, when that Venus enclosure is plugged into that Vantec card at its external connector, XP treats it as an internal SATA drive. It's like one of those IDE or SCSI controller cards. That means no green arrow in the System Tray. Basically, as far as hot plugable drives go, unless I see that green arrow icon, I will not power down the external drive until I have shutdown the PC first. And I would turn on the power to my Venus enclosure before I turn on the PC. My external SATA drive in this Venus is an expensive 400GB drive and the hollow enclosure itself cost me $60. I am not willing to test its hot plugability and risk a $450 investment. Not to mention the potential damage to the computer itself. Now that I have this ASUS motherboard, can you tell me in more details on exactly what happens when you use the eSATA connector? You mentioned that when plugged into the eSATA port, the computer "treats" the SATA drive as an internal drive and therefore the user enjoys all the benefits that is of an internal drive. Of course that is true, but you did not mention that whether you plug that SATA drive into it directly while the computer is on and that the computer detects the drive and the new drive shows up in Explorer? Do you see the green arrow in the System Tray? If you don't, and when you want to turn off the external SATA drive, you simply turn off the power to the drive and XP does not complain like it would it you had power down an internal drive (the litte red X over the icon of the drive)? I guess my confusion is derived from the way you described what took place. As you have noticed in my passages that involve my experience with the Vantec PCI SATA adapter card, I mentioned exactly what I did. I have noticed from reading online bulletin boards that unless the poster use the pronoun "I", what is being said is ambiguous. Without sentences like "I did this and I did that" from the poster, the readers get the impression that they read a sales pitch rather a review. For example, instead of saying that eSATA connector is hot pluggable, I would say that I pluged in a SATA drive to an eSATA connector using a cable that is one end SATA with the L-shape (connect to the drive) and the other end the non-L shape (connect to the eSATA port on the motherboard). Then the computer recognized the new drive and I can access the files on the external drive. And so on and so forth. Sure, it's wordy, but this way, I can make it absolutely clear on what actions took place as opposed to an ambiguous statement. At times, I am reminded of my English teacher who always made sure that I use active voice when I write. ![]() I think it should be clear what we get into before we try anything out that is "hot plugable." I mean when I plugged in a USB thumb drive for the first time while the computer was on, I made sure that I had read from a few unrelated sources that were explicitly clear that the authors actually did it. In case you want to buy some SATA gears, try the Addonics website. It has a lot of SATA stuff for sales. "Anna" wrote: > >> "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message > >> news:021D89D6-F976-493A-B17D-631E4764E2DD@microsoft.com... > >> >I just bought a new high end motherboard from Asus, the one that has the > >> >955 > >> > chipset. It has an eSATA port in the back. I have been doing some > >> > searching and was surprised to find so little info on this. From what I > >> > have uncovered eSATA is 100% hot pluggable. That means if I can connect > >> > to > >> > this port an eSATA external enclosure with a SATA drive inside, while > >> > the > >> > PC is on, I can turn off the external harddrive like I would with USB > >> > and > >> > Firewire external drives. However, I cannot find any info on how does > >> > XP > >> > handle eSATA external enclosures. In fact, I cannot even find an eSATA > >> > eternal harddrive enclosure on the Web shopping sites. Does XP treat an > >> > eSATA drive as external USB/Firewire drives in terms of hot > >> > pluggability? > >> > That is, there will be an icon with the green arrow in the System Tray > >> > when I plug in an eSATA drive through which I can use to tell XP that > >> > I > >> > am about to unplug the eSATA drive from the motherboard? > > > > "Anna" wrote: > >> Techmanblues: > >> The eSATA ("e" for external) port is a wonderful feature on your ASUS > >> motherboard. By connecting an ordinary SATA HD to this port (but note the > >> eSATA port needs a special eSATA connector on the signal/data cable that > >> will be connected to it - see below) you now have an "external" device > >> that's treated as an *internal* device by the system. > >> > >> Think of the advantages of this. For the first time in an XP environment, > >> you will be able to directly install the XP OS onto an "external" SATA > >> drive and that drive will be bootable. The more common scenario is that > >> you'll be able to clone the contents of your internal day-to-day working > >> HD (PATA or SATA) - using a disk imaging program, e.g., Ghost and the > >> drive will be bootable - a capability that has eluded us with > >> USB/Firewire external hard drives up to now. What better backup system > >> could we hope for? > >> > >> Another advantage of using an "external" SATA HD is its speed. It will > >> operate substantially at the same speed as an internal SATA HD and thus > >> be considerably faster than a USB/Firewire EHD. > >> > >> AFAIK, the eSATA port does allow for "hot-swapping" of connected devices > >> assuming the device itself has no problem with this capability. Again, > >> AFAIK, SATA II hard drives meeting the 3 Gb/sec specification will > >> support hot-swapping as long as the motherboard provides this capability. > >> > >> Still another advantage of the eSATA port is that it supports the latest > >> SATA 3 Gb/sec specification. > >> > >> So you could connect a normal SATA HD to the eSATA port without the > >> absolute necessity of containing that drive in any special enclosure. > >> Theoretically you could plop it in a cigar box or even run the SATA > >> data/signal cable directly to a bare drive. Not the most desirable thing > >> to do for the average user, but it can be done. We generally set up our > >> desktop computers with mobile racks (2) to contain our removable hard > >> drives. It's a hardware arrangement that we strongly recommend for many > >> desktop computer users. So we usually contain the "external" SATA drive > >> in one of the removable trays that are also used in the mobile racks. > >> > >> Now, what about the power to that SATA "external" drive? You simply use > >> the power from your computer's power supply. There's absolutely no need > >> for an external power supply. So that's another advantage of this eSATA > >> device, yes? Unfortunately the rub here is that ASUS did not provide an > >> external power connector alongside the eSATA port. Why they didn't do so > >> is a complete mystery to us. Actually it's simple enough for a user to > >> run a >> power cable from your PS to the external SATA drive, but it does > >> mean that you have to snake it out probably through one of the slots on > >> the backplane of the computer's case. > >> > >> BTW, there's another device we came across that users may be interested > >> in to connect an external SATA HD. It's called the SATAPOWPLAT1, > >> manufactured or distributed by StarTech. It's available from > >> http://www.cwol.com for about $19 (incl shipping) - at least the last > >> time I looked. buy.com shows it for much cheaper, but it's never in > >> stock. I assume the device is also available from other online vendors. > >> > >> This device is simply attached to the I/O bracket on the computer case's > >> backplane. It comes with two external connectors - the SATA data > >> connector and the 15-pin SATA power connector. Internally (the other side > >> of its slot plate) is, of course, the SATA data connector and the normal > >> 4-pin Molex power plug. So it's a simple matter to connect the device to > >> one of the >> power leads of your PS. Why ASUS didn't use the same simple > >> configuration with its eSATA connector is beyond me. Note that the SATA > >> data connector on this SATAPOWPLAT1 device is a standard SATA data > >> connector; it is not an eSATA connector. > >> > >> As I previously mentioned, the eSATA port connects to a eSATA data > >> connector cable. One of the sources for this type of cable (comes in 1 > >> meter and 2 meter lengths) is > >> http://www.macgurus.com/productpages...SATACables.php > >> Item MC39EX-AB > >> I guess it's also available from other sources. Unfortunately it's quite > >> expensive for a SATA data cable (although it is shielded) - about $25 for > >> the 1 meter cable. > >> > >> I'm not aware of any motherboard manufacturer aside from ASUS that has > >> equipped their latest motherboards with the eSATA port. If anyone has > >> information about this I would like to hear about it. And I'm similarly > >> not > >> aware of any laptop/notebook computers that are equipped with this > >> feature. And it would seem a most desirable feature to be incorporated in > >> those latter machines, would it not? > >> > >> It seems to me the eSATA port is the "wave of the future" that's here > >> right >> now since it has the tremendous advantages of treating an > >> "external" device as a normal internal device together with providing > >> superior performance when compared with USB/Firewire external hard > >> drives. I would think that more & more motherboards will come equipped > >> with the eSATA port (as well as an external power connector port which > >> the present ASUS motherboard lacks as noted above). > >> > >> I trust this information will be useful to you and others who might be > >> contemplating this type of device. > >> Anna > > > "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message > news:6E906A49-F686-4484-81B7-9B249BB34C96@microsoft.com... > > Thank you for such a detailed reply post. Has anyone actually used one of > > these eSATA ports to connect to a SATA drive whether in a naked > > configuration > > (just plug in the SATA drive without any enclosure that has a SATA to > > eSATA > > adapter)? I guess I am looking for people who have actually done it. > > Reading > > about specs is all and fine, but does it work in the real world is all > > that > > matters. > > > > Basically there are several ways you can connect a SATA drive to the > > computer externally. > > > > 1) The most basic way is a SATA drive connects to a SATA connector on the > > motherboard. This is no different than having the drive inside the chasis. > > The data cable simply runs through one of the expansion slits. XP will > > recognize this drive as an internal drive. Even though the SATA spec says > > > SATA drives are hot plugable, I have not worked up the courage to turn > > off > > the drive and turn the power to the drive on again while XP is running. > > But a friend of mine told me that one time, he accidentally unpluged the > > power to > the drive while the computer (XP) is on, and XP failed to > > re-associate with > the drive. I believe that SATA (at least SATA 150), is > > not 100% hot pluggable. > > > > 2) Quasi-external connection. I found in a computer store this device that > > creates a SATA interface on one of the adapter card slit on the case. It's > > pretty simple actually. You would mount this adapter to one of the slits. > > The > internal-face would connect to one of the SATA connectors on the > > motherboard and the outward facing side would be a regular SATA connector. > > Basically it's an extension cord for the SATA connector on the > > motherboard. Physically it looks nice and tidy, but logically, it's no > > different than the first scenario. XP will treat this connection as an > > internal SATA drive connection and therefore it will inherit all the > > quasi-hotpluggable characteristics. > > > > Vantec sells a PCI SATA controller card that has one internal SATA > > connector and one external SATA connector. The external one acts like the > > dumb extension cord mentioned above, except with this PCI card, you do not > > consume a SATA connector on the motherboard. > > > > 3) Half and half. Let's say there is a PCI adapter that has a bunch of > > internal SATA connectors on the card and one eSATA connector on the > > outside. When you plug a SATA drive into this eSATA connector, I assume it > > will work and XP will recognize the external drive. But my question is: > > will XP recognize the external drive in this half-and-half configuration > > as a true > > external drive like it were connected through a USB/Firewire enclosure and > > the little green arrow icon shows up in the System Tray? If this is the > > case, then the external SATA drive will be 100% hotpluggable from the > > perspective of XP. > > > > 4) Full eSATA compliance. Now imagine the 3rd scenario, but now the SATA > > drive is inside an enclosure that has eSATA on the outside. In this > > scenario, the contact points between the external drive and the computer > > is pure eSATA. > > I am sure that this will be 100% hotplugable even when the SATA drive in > > the enclosure is not SATA 300 AND the SATA connector inside the computer > > on the motherboard is also SATA 150. Basically the SATA to eSATA adapter > > acts like middleware to make sure that the connection to the external > > drive is 100% hotplugable. > > > > I have read extensively on the eSATA spec. I am surprised however, so > > little info is available on the hotplugability issue. It seems like the > > people who > create the SATA technology places hotplugability of SATA > > drives as a > > non-priority. But in practice as you can imagine, think of the > > possibilties > > if a SATA drive that can transfer data at 300MB/sec and is hotplugable? > > Think of all those hours people spend backing up data to extenal drives > > using USB and firewire? Or tape? > > > > Working as a technician, I have spent so much time waiting to backup > > people's data to an USB external drive before reformatting their old drive > > to re-install Windows that I pray for a faster transfer. Almost all the > > computers that I have worked on have tons of iTune stuff in the gigabyte > > range. It's riduculous that I have to wait 30 minutes to transfer these > > music > > files to a safe place before I start working on the system. I charge > > people > > by the hour so I am sure some people think I simply dishonestly stretch > > the > > clock while the tranfer is taking place. > > > > If eSATA is backward compatible with SATA, then shouldn't all SATA drives > > from now on should have the "non-L shape" eSATA connector on it? This way, > > if this drive is connected to a SATA connector on the motherboard, the > > BIOS and XP will treat it as an internal drive. But if you plug this drive > > to an eSATA connector like the one found on my ASUS motherboard, then XP > > will treat it as a 100% hotplugable external drive. In other words, by > > equipting all SATA harddrives with an eSATA interface, you have the > > flexibilty of internalize or externalize the drive without the need for > > all these clumsy SATA-to-eSATA adapters. I think all drive and motherboard > > manufacurers should get together and agree on this. > > > Techmanblues: > Re your opening comment: did I not make it clear in my original response to > your query that I've worked with this ASUS motherboard and the eSATA > connector? The information I provided was based on my experience with this > device, limited as it is. It wasn't theoretical. If I didn't make that clear > then, I'm making it clear now! > > You're absolutely correct that one *could* connect a SATA HD residing > outside the computer case *directly* to an available SATA connector on the > motherboard - assuming there *was* an available SATA connector for this > additional connection. But having an eSATA port makes the connection that > much cleaner, although as I previously stated, ASUS's lack of providing an > external SATA power connector is most annoying, to say the least. The eSATA > connector also makes for a more secure connection from the computer to the > external drive. As you probably know, the current SATA data connectors have > come under a great deal of criticism because they're not as secure as they > might be. Another built-in advantage of the eSATA connector is that it > supports the "hot-swapping" capability provided by the motherboard. > > The type of device you refer to under 2) is another workable alternative. I > haven't seen any though that was equipped with the eSATA connector, just the > usual SATA data connector. Does the Vantec model you mention come with a > eSATA connector? > > I'm really not sure I quite understand your comments in 3). If the adapter > device you speak of contains an eSATA connector, then a SATA HD connected to > it and residing outside the case will be detected by the system as an > internal SATA HD. There would be *no* reason why the system would treat the > drive "as a true external drive like it were connected through a > USB/Firewire enclosure". Similarly there would no reason for "the little > green arrow icon (to) show up in the System Tray". You must keep in mind > that under the circumstances we've been discussing, this "external" SATA HD > is treated as an internal HD by the system. And that's the beauty of all > this, is it not? > > With reference to your comments in 4)... > Based on the (admittedly) limited experience we've had with the ASUS P5WD2 > and its eSATA connector, the device supports hot-plugging. We tried it with > a number of different drives - WD, Hitachi, and Samsung, and all of them > were "hot-pluggable" capable. Again, my understanding is that the eSATA > connector supports this capability with SATA 300 Gb/sec drives. > > We most certainly agree with your comments about the desirability of having > faster data transfer rates using external devices. And the use of the > "external" SATA HDs that we've been discussing makes this a reality, does it > not? Especially when you compare it with USB/Firewire external hard drives. > > And we're in agreement with your comments re the effectiveness of the eSATA > data connectors as compared to the original/current SATA data connectors. > But, alas, we don't think there's going to be any wholesale movement to > these eSATA connectors in the near term. It's a pity they weren't > developed/accepted earlier. C'est la vie. > Anna > > > |
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(THIS DISCUSSION HAS CENTERED ON THE NEW eSATA (EXTERNAL) PORT INCLUDED ON
SOME ASUS MOTHERBOARDS. THIS PORT IS DESIGNED SO THAT A SATA HD RESIDING OUTSIDE THE CASE CAN BE CONNECTED TO THAT PORT. THE BASIC ADVANTAGE IS THAT THE SYSTEM THEN TREATS THAT "EXTERNAL" HD AS AN INTERNAL HD) "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message news:EEB2AFD6-014B-4735-92B1-3E34D566D60C@microsoft.com... (SNIP) Now that I have this ASUS motherboard, can you tell me in more details on exactly what happens when you use the eSATA connector? You mentioned that when plugged into the eSATA port, the computer "treats" the SATA drive as an internal drive and therefore the user enjoys all the benefits that is of an internal drive. Of course that is true, but you did not mention that whether you plug that SATA drive into it directly while the computer is on and that the computer detects the drive and the new drive shows up in Explorer? Do you see the green arrow in the System Tray? If you don't, and when you want to turn off the external SATA drive, you simply turn off the power to the drive and XP does not complain like it would it you had power down an internal drive (the litte red X over the icon of the drive)? Techmanblues: This thread is getting a bit unwieldy at this point so I've not included our past exchanges on this issue and am responding to your latest specific query. Yes, following a normal bootup with your internal HD you can connect the "external" SATA HD to the eSATA port and the system will instantly recognize it as an internal drive. It will be listed in Windows Explorer (and Disk Management) as a "normal" internal HD. Please understand that since the system detects the eSATA-connected drive as a internal drive, the "green arrow" (Safely Remove Hardware icon) does *not* appear in the Notification Area (SysTray) since the eSATA-connected drive is *not* a USB/Firewire device. Based on our experience to date with this ASUS P5WD2 Premium motherboard, the eSATA-connected drive is "hot-pluggable". As I previously informed you, using a variety of SATA II drives - WD, Hitachi, and Samsung - we could connect/disconnect the drive during normal operations without any problem whatsoever. The system would instantly recognize the drive when it was plugged in and instantly lose that recognition when the drive was disconnected. To the best of our knowledge we suffered no data loss or corruption during these processes. While we're on this subject, I want to add one other thing... I would assume that many, if not most users will be employing the eSATA-connected drive as a backup device. That is our primary, if not exclusive, use for this external device. In nearly all cases we use an external drive as the recipient of the cloned contents of our day-to-day working (internal) HD. We (primarily) use the Norton Ghost 2003 disk imaging program to perform the cloning operation. We've had no problem in so doing, regardless of whether the eSATA drive was the destination disk (which it would normally be) or whether it was the source disk should restoration of the internal drive be necessary. And once again - less we lose the real importance of what we are discussing... THE CLONED eSATA DRIVE IS BOOTABLE! But we have encountered a serious problem trying to use the Acronis True Image 8 (build 937, which I believe is the latest "build" for that version) disk imaging program. Judging from the number of postings concerning the use of disk imaging programs for backup purposes, I'm aware that many users employ the ATI program for that purpose. The problem we encountered was that ATI did not detect the eSATA-connected HD, so the cloning operation could not proceed. As a matter of fact we encountered this same non-recognition problem with ATI when a PATA drive was connected along with one or two internal SATA drives. Again, ATI did not detect the PATA drive. There was no problem with the Ghost 2003 program with this configuration. Ghost detected all the drives connected in the system - internal SATA, PATA, and, of course, the eSATA drive we've been discussing. I'm aware there's a new version 9 of ATI, but I haven't worked with it. Anna |
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Great, it's good to know that any SATA drives connected to the eSATA on this
ASUS board is true hotpluggable based on the agreed definition of what is hotpluggable. I know feel more assured about plugging in my 400GB SATA external drive into the eSATA connector on this ASUS board. This will be my first time ever. I still think it's best for XP to treat any SATA drives connected to the eSATA port as an external drive and give the green arrow icon in the System Tray as a visual cue. It's a fomality of course because this "external" drive will run at internal speed. This way, at least the users who have been accustomed to external USB drives feel more comfortable as a transitional step about sticking in and pulling out their external SATA to the eSATA port while the PC is powered on. I have always used Ghost to clone drives and create images with both SATA and PATA drives with no problems, starting with Ghost 2003. Now I also use Ghost 9. In case you are not familiar with Ghost 9 and the latest version 10, you can clone and create images of the the system drive in situ. This means the cloning and imaging occur within Windows. No need to boot from the floppy or CD. I have not done any drive cloning yet with version 9, but I have done lots of imagining where the images are saved with the new file format .v2i. The great thing about this is I can create a base-line image and then additional incremental images. The Ghost 9 CD is bootable (have tried that) and can be used to put back legacy .gho images (have not tried that). I have booted from the Ghost 9 CD to transfer files between IDE drives using a GUI interface much like ERD Commander. I do not know if Ghost 9 will work with SATA drives in this manner though. So until more vendors release eSATA hardware, we won't know how well the technology fares. I am a fanatic when it comes to backups, so it looks like eSATA is a finally a God-send. You have not mentioned something about the eSATA spec that I think is exciting: Port Multiplier. Simply put, it's akin to a USB hub. One eSATA connector connected to an eSATA(?) hub to which a multitudes of SATA drives can hook into. Given the high bandwidth SATA has, this clustering of drives won't slow down data transfer much unlike daisy-chaining firewire drives. With PM, you can finally clone to multiple SATA drives at the same time, another huge time saver. "Anna" wrote: > (THIS DISCUSSION HAS CENTERED ON THE NEW eSATA (EXTERNAL) PORT INCLUDED ON > SOME ASUS MOTHERBOARDS. THIS PORT IS DESIGNED SO THAT A SATA HD RESIDING > OUTSIDE THE CASE CAN BE CONNECTED TO THAT PORT. THE BASIC ADVANTAGE IS THAT > THE SYSTEM THEN TREATS THAT "EXTERNAL" HD AS AN INTERNAL HD) > > "Techmanblues" <Techmanblues@discussions.microsoft.com> wrote in message > news:EEB2AFD6-014B-4735-92B1-3E34D566D60C@microsoft.com... > (SNIP) > Now that I have this ASUS motherboard, can you tell me in more details on > exactly what happens when you use the eSATA connector? You mentioned that > when plugged into the eSATA port, the computer "treats" the SATA drive as an > internal drive and therefore the user enjoys all the benefits that is of an > internal drive. Of course that is true, but you did not mention that whether > you plug that SATA drive into it directly while the computer is on and that > the computer detects the drive and the new drive shows up in Explorer? Do > you see the green arrow in the System Tray? If you don't, and when you want > to turn off the external SATA drive, you simply turn off the power to the > drive and XP does not complain like it would it you had power down an > internal drive (the litte red X over the icon of the drive)? > > > Techmanblues: > This thread is getting a bit unwieldy at this point so I've not included our > past exchanges on this issue and am responding to your latest specific > query. > > Yes, following a normal bootup with your internal HD you can connect the > "external" SATA HD to the eSATA port and the system will instantly recognize > it as an internal drive. It will be listed in Windows Explorer (and Disk > Management) as a "normal" internal HD. Please understand that since the > system detects the eSATA-connected drive as a internal drive, the "green > arrow" (Safely Remove Hardware icon) does *not* appear in the Notification > Area (SysTray) since the eSATA-connected drive is *not* a USB/Firewire > device. > > Based on our experience to date with this ASUS P5WD2 Premium motherboard, > the eSATA-connected drive is "hot-pluggable". As I previously informed you, > using a variety of SATA II drives - WD, Hitachi, and Samsung - we could > connect/disconnect the drive during normal operations without any problem > whatsoever. The system would instantly recognize the drive when it was > plugged in and instantly lose that recognition when the drive was > disconnected. To the best of our knowledge we suffered no data loss or > corruption during these processes. > > While we're on this subject, I want to add one other thing... > > I would assume that many, if not most users will be employing the > eSATA-connected drive as a backup device. That is our primary, if not > exclusive, use for this external device. In nearly all cases we use an > external drive as the recipient of the cloned contents of our day-to-day > working (internal) HD. We (primarily) use the Norton Ghost 2003 disk imaging > program to perform the cloning operation. We've had no problem in so doing, > regardless of whether the eSATA drive was the destination disk (which it > would normally be) or whether it was the source disk should restoration of > the internal drive be necessary. And once again - less we lose the real > importance of what we are discussing... THE CLONED eSATA DRIVE IS BOOTABLE! > > But we have encountered a serious problem trying to use the Acronis True > Image 8 (build 937, which I believe is the latest "build" for that version) > disk imaging program. Judging from the number of postings concerning the use > of disk imaging programs for backup purposes, I'm aware that many users > employ the ATI program for that purpose. The problem we encountered was > that ATI did not detect the eSATA-connected HD, so the cloning operation > could not proceed. As a matter of fact we encountered this same > non-recognition problem with ATI when a PATA drive was connected along with > one or two internal SATA drives. Again, ATI did not detect the PATA drive. > There was no problem with the Ghost 2003 program with this configuration. > Ghost detected all the drives connected in the system - internal SATA, PATA, > and, of course, the eSATA drive we've been discussing. I'm aware there's a > new version 9 of ATI, but I haven't worked with it. > Anna > > > |
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#8
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>The information I provided was based on my experience
>with this device, limited as it is. It wasn't theoretical. Hi Anna, Fantastic to hear from someone who walked the walk so to speak.. Q1. Did you have "Enable write caching" ticked in the drive policies? Or isn't write caching an option for SATA devices? I would think if unplugging a cached drive things could get ugly.. Q2. Do you think changing the device usage to diabled before unplugging would be of any benefit? Q3. Did you try hot plugging a drive without previously having a drive attached at boot? In other words adding a drive after boot-up? Q4. What type of drive tray/caddie did you use? A backplane type where the drive connectors plug directly into the backplane or one where the drive is cable attached to the tray/caddie and the tray/caddie connector plugs into a matching connector in a drawer? Q5. Re Q4.. When un-plugging the tray/caddie does it appear that power is first disconnected and then the interface cable or sorta both at the same time? From my reading of the spec when attaching the drive - interface should be attached first, then power; when disconnecting - power should be removed first then the interface. Cheers, Mr.Ed |
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#9
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(THE ISSUE HERE IS THE eSATA CONNECTOR (PORT) PROVIDED ON THE ASUS P5WD2
MOTHERBOARD. THIS CONNECTOR/PORT IS DESIGNED TO CONNECT TO A EXTERNAL SATA HD. THE GREAT ADVANTAGE TO THIS DEVICE IS THAT THE SYSTEM TREATS THE "EXTERNAL" SATA DRIVE AS AN INTERNAL ONE) Mr. Ed: See my inline responses... <horsethattalks@gmail.com> wrote in message news:1134078799.942534.221920@o13g2000cwo.googlegr oups.com... > >Anna said: > >The information I provided was based on my experience >>with this device, limited as it is. It wasn't theoretical. > Hi Anna, > > Fantastic to hear from someone who walked the walk so to speak.. > > Q1. Did you have "Enable write caching" ticked in the drive policies? > Or isn't write caching an option for SATA devices? I would think if > unplugging a cached drive things could get ugly.. An interesting question which I hadn't thought about. Actually there's no "write caching" option available (in Device Manager) for the eSATA-connected drive as there is for the internally-connected SATA drives. So far we haven't run into any problems (that we're aware of) re connecting & disconnecting the eSATA-connected drive while the system is in use. As I previously mentioned, we've been using Hitachi, Samsung, and WD drives. > Q2. Do you think changing the device usage to diabled before > unplugging would be of any benefit? Well, so far we've encountered no problems with "hot-plugging". > Q3. Did you try hot plugging a drive without previously having a drive > attached at boot? In other words adding a drive after boot-up? Yes, and no problems whatsoever. It was identical as if you had connected a USB device after bootup. > Q4. What type of drive tray/caddie did you use? A backplane type > where the drive connectors plug directly into the backplane or one > where the drive is cable attached to the tray/caddie and the > tray/caddie connector plugs into a matching connector in a drawer? If you've come across some of my previous posts, you'll know that we're strong proponents of equipping one's desktop computer with removable hard drives (preferably two) in their (so-called) mobile racks. We've been using this hardware arrangement for a number of years now because we find enormous advantages in this hardware configuration in terms of its flexibility and the peace of mind it gives to the user at a rather modest additional cost. So what we've been doing up to now is using one of our mobile rack's removable trays (or caddy) to contain the SATA drive connected to the eSATA port. Actually, there's no particular reason why one would need to do so. You could just as well plop the drive in a cigar box or even use it bare. Note that since you can (and presumably will) use your computer's power supply to power the "external" SATA drive, there's no need for an external PS. Not the most elegant way to house the drive, to be sure, but the simplicity (not to say zero additional cost!) is appealing, no? > Q5. Re Q4.. When un-plugging the tray/caddie does it appear that > power is first disconnected and then the interface cable or sorta both > at the same time? From my reading of the spec when attaching the drive > - interface should be attached first, then power; when disconnecting - > power should be removed first then the interface. We were curious about this too. It doesn't seem to make any difference whether you first disconnect the SATA signal/data cable first or the power cable. We've alternated the connects/disconnects many times and haven't encountered any problems so far involving data corruption or damage to the drive - again, none that we're aware of. But the specification you mention referring to these connects/disconnects seems sensible. > Cheers, > Mr.Ed Ed: Thanks for raising these questions. They're most pertinent and I was remiss in not addressing these issues in my previous postings re this subject. I'm glad you've given me the opportunity to do so now. I would think that more & more motherboards are going to be equipped with an eSATA port (perhaps even multiple ports). I only hope they will also provide a power connector adjacent to the eSATA port so that it would allow one to use the computer's power supply and directly run a power cable to the external SATA port. Unfortunately, ASUS did not provide such a connection so it's necessary to snake a power cable through some opening in the computer case to do so. Simple enough to do, of course, but again, not exactly an elegant way of doing things. And think of the advantage of having one's laptop/notebook equipped with an eSATA port. Finally, a user will enjoy the advantage of having another BOOTABLE hard drive instantly available outside his or her computer. Anna |
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#10
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Anna wrote: > > Q1. Did you have "Enable write caching" ticked in the drive policies? > > Or isn't write caching an option for SATA devices? I would think if > > unplugging a cached drive things could get ugly.. > An interesting question which I hadn't thought about. Actually there's no > "write caching" option available (in Device Manager) for the eSATA-connected > drive as there is for the internally-connected SATA drives. So far we > haven't run into any problems (that we're aware of) re connecting & > disconnecting the eSATA-connected drive while the system is in use. As I > previously mentioned, we've been using Hitachi, Samsung, and WD drives. Now that's interesting - then the driver must somehow differentiate between normal and eSATA connections... wonder just how that is? Wonder if there would be a "write cache" driver option if one were to snake a normal SATA connector out of the back of the pc, boot up, then connect a SATA drive to the end of that cable?? > > Q4. What type of drive tray/caddie did you use? A backplane type > > where the drive connectors plug directly into the backplane or one > > where the drive is cable attached to the tray/caddie and the > > tray/caddie connector plugs into a matching connector in a drawer? > If you've come across some of my previous posts, you'll know that we're > strong proponents of equipping one's desktop computer with removable hard > drives (preferably two) in their (so-called) mobile racks. Been doing the same myself for the last coupla years. In fact desktops don't have any fixed drives - all in caddies. Then you go get a couple of 5.25 mobile 1394+USB2 (external self contained/powered enclosure), put one of those caddie/drawer thingos in them and now you have hot plugability for all drives in caddies.. Many, many, many advantages. Besides bootability, drive imaging, etc., my major problem turns out to be reliability of the caddie/tray/drawer thingo. The large connector on the tray ("Centronics" type) connecting all those pATA data lines and power just isn't up to the task when it comes to durability. There must be a pretty low insertion count anticipated for those type of connectors. Sooner or later I find they become unreliable. Then those crappy little tray fans - have replaced every single one, some more than once. Each time with ball bearing versions but they are still junk. So, the SATA backplane/drive tray looks very promising if hot plug works well. The connectors are much smaller; in fact they are in several offerings just the SATA connectors. Far fewer pins. And the trays don't have fans. One large fan mounted on the rear of the backplane assembly. There are offerings that take two 5.25 bays and convert them into three 3.5 SATA tray slots, and ones that take three 5.25 bays and convert them into four 3.5 SATA tray slots. But this really isn't eSATA. The backplane can be wired up to any SATA connector. I suspect what maybe we are all really wanting is full hardware implementation of SATA II "hot swap" spec and Windows full support thereof.. In the meantime, you have given enough info for me to risk giving one of these backplanes a try. Your postings do come with a money back |