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Can I use a SATA II drive in a SATA RAID 5 array?

Posted on 2009-06-27
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I have a RAID 5 array on a SATA controller. Can I replace a degraded drive with a SATA II drive?

Follow on:  Does the new drive HAVE to be the same size as the rest of the drives in the array or can it be bigger?
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Question by:dgrenda
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rindi earned 2000 total points
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SATA-II Drives are backwards compatible to SATA-I. On some drive you have to set a jumper to limit it to SATA-I speeds, and on some others you have to run a manufacturer's utility where you can do the same via software. This utility would have to run on a non-raid controller, but after it has been set to SATA one that is remembered by the HD. If your RAID Controller is capable of SATA-II, you don't have to set the lower speed.

You can always use larger drives in a RAID 5 array, you just won't be able to use the extra size. Smaller drives on the other hand don't work.
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by:dgrenda
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Great job thank you!
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