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A friend of mine has removed 4 disks from 2 raid 0 arrays and can't remember which disk belongs to which.
Should she put them in wrong, is there potential for data loss to occur?
If so, how could she determine which disk belongs to which.
I have told her why raid 0 shouldn't be used in a production environment like hers.
Many Thanks
Matt
Matthew Dutton
Posted 2013-04-17T09:42:54.793
Reputation: 23
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It depends on how the RAID was setup. Some hardware controllers write the array configuration to the drives. You can put those back in any order you like and the RAID controller will figure out which drives to use.
Some, not all.
The same is true of some software RAID implementations. E.g. in Linux you can query the status of a disk with the mdadm command. (Boot from a liveCD, insert a single drive and query. That way there is not risk of a 'helpful' autodetect and useage of the array.
For windows the same is probably true, though I do not have any experience with windows and non-hardware RAID.
Hennes
Posted 2013-04-17T09:42:54.793
Reputation: 60 739
Thanks! I'm not too sure what she's using so that's all the information I could give. I'll let her know cheers! – Matthew Dutton – 2013-04-17T15:37:12.440
1How was the RAID setup? HW RAID? If so which card? If software RAID: which OS, which RAID driver? – Hennes – 2013-04-17T12:11:07.640