[G4] EIDE and Ultra ATA RAID

[Philip J Robar]

On Apr 25, 2005, at 12:30 PM, shopdog wrote:

> How do you get the data off the surviving drive in a mirrored RAID  
> array if the array fails?

Yes, that's the whole point of mirroring. After a failure you add a  
new drive to replace the failed drive and then rebuild the array.

Note that concatenating a bunch of disks to look like a single disk  
has the same problem as a stripped array - if one drive fails you  
loose the data on all the drives. You can work around this by  
creating an array of arrays. For instance Kevin, who started this  
thread, could, with Tiger, concatenate each of his 120 GB drives to  
one of his 40 GB drives to get 160 GB and then mirror these  
concatenations to each other.

Phil