On Wed, Feb 10, 2010 at 17:06, Brian E. Imhoff <beimh...@hotmail.com> wrote: > I am in the proof-of-concept phase of building a large ZFS/Solaris based SAN > box, and am experiencing absolutely poor / unusable performance. > > I then, Create a zpool, using raidz2, using all 24 drives, 1 as a hotspare: > zpool create tank raidz2 c1t0d0 c1t1d0 [....] c1t22d0 spare c1t23d00 Create several smaller raidz2 vdevs, and consider adding a log device and/or cache devices. A single raidz2 vdev has about as many IOs per second as a single disk, which could really hurt iSCSI performance. zpool create tank raidz2 c1t0d0 c1t1d0 ... \ raidz2 c1t5d0 c1t6d0 ... \ etc You might try, say, four 5-wide stripes with a spare, a mirrored log device, and a cache device. More memory wouldn't hurt anything, either.
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