RAID / Dual HDD question

  Jamesy 12:29 09 Jan 2003
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  Jamesy 12:29 09 Jan 2003

I've recently purchased a 185GB IBM Desktar drive. I plan to add another in around a month or so to combat storage concerns for good, perhaps in a RAID formation. Quick question, I know RAID ideally requires two drives of the same size and speed. If I added another, brand say a Western Digital, that is 180 gigs ie: a few gigs less, would this make any difference to the performance of the array or would I truly be better off with two identical drives? They are both 7,200 RPM, 8 meg cache drives.

  jazzypop 13:18 09 Jan 2003

You don't say which type of RAID you will be implementing (0, 1, 2 etc), but the general answer is the smallest / slowest drive is the limiting factor, i.e. all drives are reduced to the capacity and speed of the the smallest / slowest drive.

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