On 11/11/2009 14:52, Leslie Rhorer wrote:

quoted

On 11/11/2009 08:53, Leslie Rhorer wrote:

[...]

quoted

risk of downtime anyway because your filesystem root is on a non-RAID
device, but while you can (as I think you've said before) replace the
boot disc quickly, you're exposing yourself to a long, slow resync which
will increase your downtime by perhaps days...

	That presumes a loss of the boot drive *AND* one or two RAID drives.
That's pretty unlikely, unless something really nasty happens.

I don't think it does - even if none of the RAID drives goes, the system 
crashing because of the root drive going AWOL might well leave the 
system with the RAID array marked "dirty" because it wasn't shut down 
cleanly, which without the bitmap would mean you'd get a full resync 
when you rebooted.

Cheers,

John.