Are there, or Does it make any sense to try to find a RAID card with battery backup that will ignore the ZFS commit commands when the battery is able to guarantee stable storage?
I don't know if they do this, but I've recently had good non-ZFS performance with the IBM ServeRAID 8k raid that was in an xSeries server I was using. the 8k has 256MB or batter backed cache. The server it was in, only had 6 drive bays, and I'm not looking to have it do RAID5 for ZFS, but I just had the idea: "Hey, I wonder if I could setup the card with 5 (single drive) RAID 0 LUNs, and gain the advantage of the the 256MB battery backed cache, when I tell ZFS to do RAIDZ across them?" I know battery-backed cache, and the proper commit semantics are generally found only on higher end raid controllers and arrays (right?) But I'm wondering now if I couldn't get an 8 port SATA controller that would let me map each single drive as a RAID 0 LUN and use it's cache to boost performance. My primary use case, is NFS base storage to a farm of software build servers, and developer desktops. Anyone searched for this already? Anyone found any reasons why it wouldn't work already? -Kyle _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
