Sas device has wwn 64bit Each hdd has different wwn
Sent from my iPad Hung-Sheng Tsao ( LaoTsao) Ph.D On May 17, 2011, at 4:29 PM, Eric Sproul <[email protected]> wrote: > On Tue, May 17, 2011 at 3:45 PM, Luigi Manna <[email protected]> wrote: >> Hi, >> >> maybe this has already been discussed but couldn't figure out how to search >> for it. We have a backup server with 24 SATA disks where we upgraded all >> disks from 1 TB to 2 TB. We forgot to do all the cfgadm -c replace e for all >> the receptacles and the AP_ID just increased the "y" value for cxtydz . > > I've seen this happen with LSI SAS RAID controllers. Typically to get > "JBOD" behavior you just don't configure any RAID volumes and the > controller will present each drive as a separate device. However, if > you replace a drive, the controller seems to know that the new drive > is not the same physical device (maybe it remembers the serial number) > and presents a new target number instead of re-using the old one. > > I haven't had time to figure out exactly why this happens, but it's > annoying and I'd love to understand it better. > > Eric > _______________________________________________ > sysadmin-discuss mailing list > [email protected] > http://mail.opensolaris.org/mailman/listinfo/sysadmin-discuss _______________________________________________ sysadmin-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/sysadmin-discuss
