eSata external hard drive question

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Hi All
i am currently running windows 7 64 bit and back up to an external hard drive, the drives in the pc are sata drives, my problem is i need to buy a new external hard drive as my current one is not big enough, will i be able to use a drive with an eSata connection, i have read the specs on TI 2010 and it only mentions usb1.0 & 2.0 and firewire, nothing about eSata.

Can someone please confirm.

Thanks

Pete

Thu, 08/05/2010 - 14:33
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I use Acronis to make partition image backups to an external e-SATA drive. As far as Acronis is concerned it's working with another internal SATA device and it's fine.

If you want to be able to connect/disconnect your e-SATA device at will and without rebooting Windows (known as "hot plug") your computer must be configured to run the SATA controller to which the external device is connected (some computers have more than one) in AHCI or RAID mode. This may require changing some settings in the system BIOS and/or Windows registry, or installing a 3rd party device driver. Check your computer's documentation for details.

In addition, if your computer is more than a couple of years old, or a laptop, it may not support running the SATA controller in AHCI mode as required for "hot plugging" external devices. If that's the case you will have to reboot Windows every time you connect or disconnect the external device and you might be better served by getting a larger USB device instead of an e-SATA external drive.

Thu, 08/05/2010 - 15:23
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I have no experience with WIN7 and so I can tell only, what I figured out on WIN-XP.

I made measurements with the same disk drive, connected internaly (SATA), externaly (SATA to ESATA Cable, not recomended), externaly (via PCI-Card and ESATA), and via USB ...

To say it in a few words: USB-2 is very, very slow, compared with the same disk connected via USB. Doing a reboot, to detect the disk´s (if hotplugging does not work reliable) and transporting Data with highspeed, does really make sense, if I can write Data with 100 MByte/sec instead of 30 MByte/sec. AHCI was not a problem with the external disk, it worked fine (in my case). As long as I don´t have USB-3 access to external disk´s, I´ll use SATA (less OS-Overhead than handling a USB-Stack, faster, no difference in Speed internal/external disk´s when using a motherboard with eSATA connector; possible, to connect more than 1 disk with 1 SATA cable with port multiplier facility)

Please have a look at this Speed measurements, and devide what You would like to get ...

Michael

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Thu, 08/05/2010 - 15:44
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Pete,

In order to use an eSata enclosure as a Sata drive, you need to have an eSata connection point on your computer. If you have one, this could be anywhere on your computer-front or back.

If your computer does not offer an eSata conneciton point, if a desktop computer, you can add an internal PCI card with two (or more} connectors (internal/external) which enabled me to plug my eSata into a rear faceplate.

Click on my signature below and check index item 7-G. This shows a Theremaltake docking unit that I use. This unit can be attached to the computer EITHER as a USB or eSata so you have two methods for a connection point. Some units of this type are only one method of connection but others offer both so be careful what you buy and get the unit which offers both usb and eSata as the connection point.

If you buy a enclosure such as the Thermaltake, then you need to buy a plain SATA drive and it drops into the docking unit for use as shown in the illustration. I have 4 plain SATA disks that I alternate using with the Docking unit. Having a docking unit makes using alternate disks very easy and being able to connect the docking unit as either usb or eSata is a real plus.

Another option:
Or, assuming that your computer is a desktop, if you have a empty bay in front of your computer case, you could get get a hard drive caddy such as the link below. To use such a unit, you need a motherboard sata connection and the unit also includes an additional external eSata connection point (which also requires another motherboard sata connection)

http://www.antec.com/Believe_it/product.php?id=MjA2OQ

I have both the Antec caddy and the Thermaltake unit plus multiple loose drives so you can make as many backups as you wish-- plus maybe store multiple copies of some your files or pictures without them being included inside a backup file.

The way I use my Antec caddy is that I have one hard drive with TrueImageHome 2010 installed and other portable drive with TIH2011 Beta installed. Since the both can't be installed at the same time. I just shutdown and switch the drives. The drive switching takes about 5 seconds plus whatever time is needed for shutdown and a reboot.

Thu, 08/05/2010 - 21:48
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