[G4] EIDE and Ultra ATA RAID

[shopdog]

I see.  I didn't understand that you get the array back that way.  I 
thought there was a way to pull the file off the one drive.

Can you please explain in more detail the concatenation setup you 
described?  I'm not sure I quite understand...

On Apr 25, 2005, at 3:52 PM, Philip J Robar wrote:

>
> 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
>
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