Richard Elling wrote: > Tobias Exner wrote: > >> Hi John, >> >> I've done some tests with a SUN X4500 with zfs and "MAID" using the >> powerd of Solaris 10 to power down the disks which weren't access for >> a configured time. It's working fine... >> >> The only thing I run into was the problem that it took roundabout a >> minute to power on 4 disks in a zfs-pool. The problem seems to be that >> the powerd starts the disks sequentially. >> > > Did you power down disks or spin down disks? It is relatively > easy to spin down (or up) disks with luxadm stop (start). If a > disk is accessed, then it will spin itself up. By default, the timeout > for disk response is 60 seconds, and most disks can spin up in > less than 60 seconds.
However, some apps will probably be very unhappy if i/o takes 60 seconds to complete. _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
