To clean up the spare disks and zero them, use the below command. Having a zero’d spare disks can reduce time when on volume creation or on volume reconstruction.

filer1> disk zero spares.
filer1> vol status -s

Spare disks

RAID Disk       Device  HA  SHELF BAY CHAN Pool Type  RPM  Used (MB/blks)    Phys (MB/blks)
———       ——  ————- —- —- —- —– ————–    ————–
Spare disks for block or zoned checksum traditional volumes or aggregates
spare           2a.37   2a    4   13  FC:A   –  FCAL 10000 68000/139264000   68444/140174232 (zeroing, 10% done)
spare           3a.56   3a    3   8   FC:A   –  FCAL 10000 68000/139264000   68552/140395088

Please note that, this command only zero’s spares that are not already clean.

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