On Tue, Mar 22, 2005 at 12:29:57PM +0100, Schuett Thomas EXT wrote:
Define RAID,
I will answer for RAID = MD driver, but hw raid solutions might have
different answers (eg battery backed up cache)
If you think through system crash scenarios, what types of chrashes
are you are thinking of? Do you only consider harddisk faults, or
do you consider power failures as well?
md protects against disk failures
Or more extreme: Does RAID gives you savety on HD HW failures, but may
make things worse for power failures (hard power switch off)?
a power failure _might_ make things worse
Or more academic: Does raid have some journaling of its dirty cache
(and/or whatever would need to be journaled) in a non volatile way,
or isn't there any need for it for any tricky reason?
there isn't one for lack of a non-volatile storage for dirty cache
--
Luca Berra -- bluca@xxxxxxxxxx
Communication Media & Services S.r.l.
/"\
\ / ASCII RIBBON CAMPAIGN
X AGAINST HTML MAIL
/ \
-
To unsubscribe from this list: send the line "unsubscribe linux-raid" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
