Can grub be installed on a md array?

Derek Broughton news at
Thu Oct 16 18:36:59 UTC 2008

Mark Haney wrote:

> Derek Broughton wrote:
>>> My personal recommendation for this is to have a boot drive mirrored,
>>> then RAID the data drives.  It is NEVER a good idea to make the boot
>>> drive part of the RAID array.
>> You can, of course, put /boot on its own partition, and it shouldn't even
>> need to be mirrored, but I don't know if that provides enough, or if
>> having / on raid is also problematic.
> That's true, but you lose the fault tolerance of having /boot mirrored.
>   Personally, on a production or critical system (even a critical one at
> home), I'd have it mirrored.  (I have 3 servers at home with this setup.
>   But then, of course, I'm paranoid.
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.


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