[Beowulf] Large raid rebuild times
jbardin at bu.edu
Fri Nov 20 11:56:18 EST 2009
On Fri, Nov 20, 2009 at 9:43 AM, Joe Landman
<landman at scalableinformatics.com> wrote:
> We have customers with 32TB raw per RAID, and when a drive fails, it
> rebuilds. Rebuild time is a function of how fast the card is set up to do
> rebuilds, you can tune the better cards in terms of "background" rebuild
> performance. For low rebuild speeds, we have seen 24 hours+, for high
> rebuild speeds, we have seen 12-15 hours for the 32TB.
Thanks for that. That sounds inline with my expectations.
Any chance you've compared linux md raid6 to hardware solutions for
> ZFS is probably not what you want to do ... building a critical dependency
> upon a product that has a somewhat uncertain future ...
I'm not too worried about zfs - it has plenty of following. I'm
personally waiting for btrfs to stabilize so we can start testing, but
that's a ways off. The issue here is that the group setting up these
storage servers is an all linux shop, and they don't want the overhead
of another OS.
Beowulf mailing list, Beowulf at beowulf.org sponsored by Penguin Computing
To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
More information about the Beowulf