Prefail a netapp disk

stx601na08> disk fail 0b.29

*** You are about to prefail the following file system disk, ***

*** which will eventually result in it being failed ***

  Disk /test_aggr1/plex0/rg0/0b.29

      RAID Disk Device  HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)

      --------- ------  ------------- ---- ---- ---- ----- --------------    --------------

      data      0b.29   0b    1   13  FC:B   -  ATA   7200 423111/866531584  423889/868126304

***

Really prefail disk 0b.29? y

disk fail: The following disk was prefailed: 0b.29

Disk 0b.29 has been prefailed.  Its contents will be copied to a

replacement disk, and the prefailed disk will be failed out.

stx601na08> sysconfig -r

Aggregate test_aggr1 (online, raid4) (block checksums)

  Plex /test_aggr1/plex0 (online, normal, active)

    RAID group /test_aggr1/plex0/rg0 (normal)

      RAID Disk Device  HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)

      --------- ------  ------------- ---- ---- ---- ----- --------------    --------------

      parity    0a.29   0a    1   13  FC:A   -  ATA   7200 423111/866531584  423889/868126304

      data      0b.29   0b    1   13  FC:B   -  ATA   7200 423111/866531584  423889/868126304 (prefail, copy in progress)

      -> copy   0c.112  0c    7   0   FC:B   -  ATA   7200 423111/866531584  635858/1302238304 (copy 0% completed)