Wednesday, 12 October 2011

Raid 4

Raid 4

  • It will protect against the loss of just one disk per raid group.
  • RAID 4 will not "protect against multiple disk failures"  
  • If suppose some disk failed in different raid group, there won't be any data loss.

In Raid 4 Required minimum 2 disks required to create one aggregate

One disk for data disk
One disk for parity disk



filer>Aggr create -r 5 -t raid4 aggr1 10

aggr1 will randomly take 10 disk from spare disk and -r 5 which means each raid group should have 5 disks
it will create two raid group and each raid group have 5 disks.

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