On Tue, 19 Oct 2010 05:15:23 PDT, you wrote:

> If two drives are mirrored together in hardware
> at the controller level. Will grub also be mirrored?

Yes. Hardware RAID is unaware of filesystems and boot
blocks, it blindly mirrors all blocks. A RAID resilver
resilvers all blocks, even unused ones.

> If the primary drive fails will the system still be able to boot?

Yes. The system is provided one logical disk, and isn't
aware of any redundancy in the RAID, nor is it affected by
partial failures in the hw-RAID, except for perhaps a slower
response.

Only RAID specific utilities are aware of the real status of
the RAID.
-- 
  (  Kees Nuyt
  )
c[_]
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