On 03/18/2013 02:22 PM, Hearns, John wrote: > We've come close: > > admin@mes-str-imgnx-p1:~$ zpool list > NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT > datapool 978T 298T 680T 30% 1.00x ONLINE - > syspool 278G 104G 174G 37% 1.00x ONLINE - > > Using a Dell R720 head unit, plus a bunch of Dell MD1200 JBODs dual > pathed to a couple of LSI SAS switches. > > Using Nexenta but no reason you couldn't do this w/ $whatever. > > We did triple parity and our vdev membership is set up such that we can > lose up to three JBODs and still be functional (one vdev member disk > per JBOD). > > This is with 3TB NL-SAS drives. > > > That's very interesting. > My kneejerk reaction is always to say 'data does not exist unless you have > two copies of it' - > ie. You should always make sure there are two copies of data on separate > media. > > In this setup though it looks like you can achieve substantially that result, > without mirroring between > two completely separate ZFS servers. > Being able to lose three JBODs without overall losing data is interesting - > can we find out more about this setup? > > The contents of this email are confidential and for the exclusive use of the > intended recipient. If you receive this email in error you should not copy > it, retransmit it, use it or disclose its contents but should return it to > the sender immediately and delete your copy. > _______________________________________________ > Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing > To change your subscription (digest mode or unsubscribe) visit > http://www.beowulf.org/mailman/listinfo/beowulf
At my site we tried using GlusterFS to glue together similar Supermicro boxes full of drives. The design never made it to production as I was able to cause it to die or become split brained in the dev environment. You may have better luck than me if you want to try it, just my $0.02 on a piece of software which purports to do what you are looking at. I does have a feature which mirrors between two servers as you mentioned though I doubt it runs on Solaris though (I used RHEL 6 with XFS). _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org sponsored by Penguin Computing To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
