What if Disk 0 of aggregate 0 fails?

akhtar_ghazi · ‎2009-12-30

I am an IT soulutions architect providing storage solutions to customers. One my my client where my company deployed netapp storage had encountered an issue i.e. their disk0 of aggregate 0 becomes which resulted in complete failure of the storage system. Is there any remedy to this issue?

akhtar_ghazi · ‎2009-12-31

disk 0 of aggregate 0 becomes faulty then whole storage system fails. is there any solution to this??

stratify_tc · ‎2009-12-31

If you have let Data OnTap configure your initial aggregate (AGGR0), it will most likely have only 3 disks in it. Should any of the disks fail the system will pick up a spare and begin to rebuild the data on it. The assumption is that you have allowed this aggregate to be created as RAID-DP, in this case you actually have 2 parity drives and can sustain a double disk failure on the system.

To verify what you are looking at, from a command line run "sysconfig -r". This will list all of the RAID groups for you. I have done that on a system and the output of the system is:

Aggregate aggr0 (online, raid_dp) (block checksums)
Plex /aggr0/plex0 (online, normal, active)
RAID group /aggr0/plex0/rg0 (normal)

      RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks)    Phys (MB/blks)
      --------- ------ ------------- ---- ---- ---- ----- --------------    --------------
      dparity   0c.19   0c    1   3   FC:B   - FCAL 10000 272000/557056000 280104/573653840
      parity    0b.32   0b    2   0   FC:A   - FCAL 10000 272000/557056000 280104/573653840
      data      0c.22   0c    1   6   FC:B   - FCAL 10000 272000/557056000 280104/573653840

I hope that this answers your question.

TC Labby