So, finally! Sun has a SAS/SATA JBOD that doesn't have the extra crap we, as zfs users, do not need.
How does zfs handle device renumbering? IIRC from my last foray into SAS, the LSI or Sun HBA remembers drive id's. If you remove all drives from the chassis (some SAS/SATA chassis, not specifically J4500) and replace them in random order, they would retain the same mapped scsi id's that they had previously, as the controller would remember which drive was which. This makes it difficult to know which drive to remove in the event of a failure since the chassis slot numbering isn't related to the scsi id. (and all you have to go on is scsi id.) Also, this makes single drive replacement, even when the scsi id to chassis slot mapping is previously known, an issue since your new drive won't be there *instead of* the old removed drive, it will be a new addition. Just wondering how this works now. Or does the SAS driver do away with scsi id's now? -frank _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
