[SATLUG] OT: RAID drives
alesmerises at satx.rr.com
Wed May 11 17:48:38 CDT 2011
I have a general question about RAIDs that I haven't seen an answer to
How closely do the drives need to match in a RAID, when you're looking
for replacements for drives that are in an existing RAID?
Specifically, I have several identical drives in a RAID 5, but only 1
spare right now. In searching for sources for additional spare drives,
the specific model drive I currently have doesn't seem to be readily
available (not unless you're willing to spend huge amounts of $). But I
can find some drives that are pretty close to the ones I already have.
So the question is: How close is close enough?
- How close does the new drive need to be (in terms of capacity)
compared to the drive it's replacing to keep from totally screwing-up
- Do they need to be the same speed (7200 vs 10k or 15k), or does that
make much difference (in terms of data integrity)? I do recognize that
one slow drive could create a bottleneck, at least under _some_
- Are there any other considerations I should know about?
What do you think?
More information about the SATLUG