Re: RAID1: What happens when one half of a mirror fails?

[Frank Wittig <fw@weisshuhn.de>]

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The RAID1 should allow the system to opperate as usual until the drive
is replaced. I replaced 2 hot-plugable disks (both part two RAID1 which
were both parts of a RAID0) on a dell poweredge server this tuestay
without even rebooting.
If your disks have EEC there should be a minimum risk for failure of a
degraded RAID1.

Eric Pretorious wrote:
> Hello, All:
> 
> I've been a bit surprised by the complete failure of our system when one half 
> of a mirror failed so I suppose that I should verify that I understand 
> RAID1's failover methodology: Is the purpose of the mirror only to preserve 
> the data or is it to allow the system to continue operating until a 
> replacement can be installed? (i.e., If one half of a mirror fails, shouldn't 
> the system continue operating normally?)
> 


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