ZFS is Still Rad

I have a small file server at home running OpenIndian to store various media libraries and local backups. This machine is a SuperMicro X7SPA-H with a dual core Intel Atom D525 and 2GB of laptop memory from an old MacBook Pro. The 5 disk JBOD is made up of 4 Seagate 1.5TB Barracuda 7200RPM SATA2 drives, and 1 Western Digital 2.5TB Caviar Green SATA3 drive. In hind site, the Seagate disks were not the greatest choice as they are prone to failure. Seagate does have a great warranty and RMA process. Advance replacement is only $10 with with an included return label. that is $2 less than what I paid for the first drive to be sent via UPS.

Recently one of the raidz disks started clicking and producing read/write/checksum errors. I yanked it out and the spare took over as expected. I shipped off that bad disk to Seagate's Texas RMA facility for a replacement.

Before the replacement disk arrived the SPARE disk started the same behavior! Clicking and lots of errors. Yanked the drive and RMAd the disk.

I had waited far longer than I should have to get the new disk in and re-silver the pool. A couple hundred GBs of data had been written since both disks failed, and so there was a lot of data to re-distribute. The entire process of scanning the entire 2 SATA disks, checksumming, and re-distributing of 613GB of data was completed in less than 5 HOURS! I am really quite impressed by this little Atom box.

root@openindiana:~# zpool list
rpool  1.98T  1.87T   114G    94%  1.00x  ONLINE  -
tank   4.06T  1.81T  2.25T    44%  1.00x  ONLINE  -
root@openindiana:~# zpool status
  pool: rpool
 state: ONLINE
  scan: scrub repaired 0 in 4h36m with 0 errors on Mon May 21 06:21:46 2012

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          c3t2d0s0  ONLINE       0     0     0

errors: No known data errors

  pool: tank
 state: ONLINE
  scan: resilvered 613G in 4h6m with 0 errors on Mon Jul 23 13:48:48 2012

        NAME          STATE     READ WRITE CKSUM
        tank          ONLINE       0     0     0
          raidz1-0    ONLINE       0     0     0
            c3t1d0p0  ONLINE       0     0     0
            c3t0d0p0  ONLINE       0     0     0
            c3t3d0p0  ONLINE       0     0     0
          /dev/ad12   UNAVAIL   cannot open

errors: No known data errors

Now I just need to get the spare back in the pool to clear up the remnants of FreeBSD(FreeNAS really).