On Wed, Mar 26, 2008 at 11:04 AM, Larry Lui <[EMAIL PROTECTED]> wrote:
> This issue with not having RAID on the front end solaris box is what > happens when 1 of the backend thumpers dies. I would imagine that the > entire zpool would become useless if 1 of the thumpers should die since > the data would be across all the thumpers. > > Tim wrote: > > What you want to do should actually be pretty easy. On the thumper's, > > just do your normal raid-z/raid-z2, and export them to the solaris box. > > Then on the solaris box, you just create a zpool, and add the LUN's one > > at a time. No raid at all. The system should just stripe across all of > > the LUN's automagically, and since you're already doing your raid on the > > thumper's, they're *protected*. You can keep growing the zpool > > indefinitely, I'm not aware of any maximum disk limitation. > > > > > > On Tue, Mar 25, 2008 at 6:12 PM, Larry Lui <[EMAIL PROTECTED] > > <mailto:[EMAIL PROTECTED]>> wrote: > > > > Hello, > > I have a situation here at the office I would like some advice on. > > > > I have 6 Sun Fire x4550(Thumper) that I want to aggregate the > storage > > and create a unified namespace for my client machines. My plan was > to > > export the zpools from each thumper as an iscsi target to a Solaris > > machine and create a RAIDZ zpool from the iscsi targets. I think > this > > is what they call RAID plaiding(RAID on RAID). This Solaris > frontend > > machine would then share out this zpool via NFS or CIFS. > > > > My question is what is the best solution for this? The question i'm > > facing is how to add additional thumpers since you cannot expand a > RAIDZ > > array. > > > > Thanks for taking the time to read this. > > > > Larry > > _______________________________________________ > > zfs-discuss mailing list > > zfs-discuss@opensolaris.org <mailto:zfs-discuss@opensolaris.org> > > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > > > > > > -- > Larry Lui > BIRN Coordinating Center > UC San Diego > 9500 Gilman Drive > La Jolla, CA 92093 > > email: llui at ncmir dot ucsd dot edu > phone: 858-822-0702 > fax: 858-822-0828 > _______________________________________________ > zfs-discuss mailing list > zfs-discuss@opensolaris.org > http://mail.opensolaris.org/mailman/listinfo/zfs-discuss > True, but then it becomes a matter of assumed risk vs. payoff. It seems to me it would be cheaper in the long run to have an entire spare thumper chassis that you could throw the drives into than the price/performance loss of doing raid on the front and the backend. If this is so mission critical that it can't ever be down, I guess my first response would be "find a different way". In fact, my response would be buy a USP-VM or a Symm if it's that mission critical, and put a cluster of *whatever* in front of them to serve your nfs traffic. --Tim
_______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
