Can grub be installed on a md array?

[Rashkae]

Derek Broughton wrote:

>  
> You certainly are.  /boot can be read only (and on a "production or critical
> system" probably should be), and it gets almost no disk accesses compared
> to any other part of the system, so it's pretty pointless to mirror it imo. 
> 
> Added to that, if anything _did_ kill /boot, you can boot from a live CD.
> 

Now I would have to disagree.

One of the advantages of a RAID installation is, if a disk fails, the
computer keeps working until you get it replaced.  For that two work, yo
need a redundant copy of /boot.

It doesn't have to be a Raid mirror if you want to manually create and
maintain the copy, but as long as you create a second redundant /boot
partition, might as well just use RAID 1 and be done with.


RAID should never be mistaken as a data backup substitute.  While it can
be handy to recover your data in case of a hard drive crash, the real
advantage is minimized down time to  hardware failure, and that requires
your boot to be RAID as well.