You'll likely need to disable cache flushes or you're going to see poor performance to any mailspools on the SAN because of the array NVRAM. You can either disable this on the SAN or by setting a kernel parameter. See http://www.solarisinternals.com/wiki/index.php/ZFS_Evil_Tuning_Guide#Cache_Flushes for details. James M McNutt wrote: > move from Sun StorEdge 9960 to Sun StorEdge 9990 > > On Mon, 16 Mar 2009, Dale Ghent wrote: > >> On Mar 16, 2009, at 1:52 PM, James M McNutt wrote: >> >>> We are currently running Solaris 9 with VxVM/VxFS >>> and looking to move to Solaris 10 with ZFS. >> <snip> >> >>> current configuration: >>> 48,000 user accounts with 350,000 mailboxes spread across: >>> 4 Sun V880 server attached to a SAN >>> 3 spools per server (for a total of 12 spools) >>> each spool is using about 250GB >> Would you be looking to reuse your current SAN-based storage with this? >> >> /dale >> -- Darin Perusich Unix Systems Administrator Cognigen Corporation 395 Youngs Rd. Williamsville, NY 14221 Phone: 716-633-3463 Email: darinper@xxxxxxxxxxxxxxxx ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html