boldly plowing forwards I request a few disks/vdevs to be mirrored all at the same time : bash-3.2# zpool status zfs0 pool: zfs0 state: ONLINE scrub: resilver completed with 0 errors on Thu Feb 1 04:17:58 2007 config: NAME STATE READ WRITE CKSUM zfs0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t9d0 ONLINE 0 0 0 c0t9d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t10d0 ONLINE 0 0 0 c0t10d0 ONLINE 0 0 0 c1t11d0 ONLINE 0 0 0 c1t12d0 ONLINE 0 0 0 c1t13d0 ONLINE 0 0 0 c1t14d0 ONLINE 0 0 0 errors: No known data errors bash-3.2# zpool attach -f zfs0 c1t11d0 c0t11d0 bash-3.2# zpool attach -f zfs0 c1t12d0 c0t12d0 bash-3.2# zpool attach -f zfs0 c1t13d0 c0t13d0 bash-3.2# zpool attach -f zfs0 c1t14d0 c0t14d0 needless to say there is some thrashing going on bash-3.2# zpool status zfs0 pool: zfs0 state: ONLINE status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scrub: resilver in progress, 0.00% done, 45h14m to go config: NAME STATE READ WRITE CKSUM zfs0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t9d0 ONLINE 0 0 0 c0t9d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t10d0 ONLINE 0 0 0 c0t10d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t11d0 ONLINE 0 0 0 c0t11d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t12d0 ONLINE 0 0 0 c0t12d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t13d0 ONLINE 0 0 0 c0t13d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t14d0 ONLINE 0 0 0 c0t14d0 ONLINE 0 0 0 errors: No known data errors bash-3.2# moments later I see : bash-3.2# zpool status zfs0 pool: zfs0 state: ONLINE status: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state. action: Wait for the resilver to complete. scrub: resilver in progress, 1.59% done, 2h19m to go config: NAME STATE READ WRITE CKSUM zfs0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t9d0 ONLINE 0 0 0 c0t9d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t10d0 ONLINE 0 0 0 c0t10d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t11d0 ONLINE 0 0 0 c0t11d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t12d0 ONLINE 0 0 0 c0t12d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t13d0 ONLINE 0 0 0 c0t13d0 ONLINE 0 0 0 mirror ONLINE 0 0 0 c1t14d0 ONLINE 0 0 0 c0t14d0 ONLINE 0 0 0 errors: No known data errors bash-3.2# bash-3.2# mdb -k Loading modules: [ unix krtld genunix specfs dtrace ufs scsi_vhci sd ip hook neti sctp arp usba nca zfs random audiosup sppp crypto ptm md logindmux cpc wrsmd fcip fctl fcp nfs ]> ::memstatPage Summary Pages MB %Tot ------------ ---------------- ---------------- ---- Kernel 79986 624 71% Anon 16131 126 14% Exec and libs 1830 14 2% Page cache 533 4 0% Free (cachelist) 934 7 1% Free (freelist) 13662 106 12% Total 113076 883 Physical 111514 871>bash-3.2# so in a few hours I will have decent redundency all on snv_55b ... looking very very fine -- Dennis