Here at work we are dedicated Netapp zealots, so are fully bought into to Ontap. That said there are occasions when we need to replace a drive in a 7Mode appliance which give us all the shivers was we left this behind long ago. So here is a quick how to on what to do. For the uninitiated, simply replacing the failed drive is not enough in most cases as we have auto assign turned off. If the drive is not manually assigned to a controller, it will sit in the ‘un-owned’ state and will not be a spare for any aggregate.
Step1: Swap the drive
Complete the mechanics of the swap.
Step 2: Check the drive is seen. Do this on the controller you want the drive to belong to.
CONTROLLER1> disk show -n DISK OWNER POOL SERIAL NUMBER HOME DR HOME ------------ ------------- ----- ------------- ------------- ------------- 0b.01.9 Not Owned NONE KZBMBNDR
Step 3: Assign to the controller, note I want it on CONTROLLER1
CONTROLLER1> disk assign 0b.01.9
Note that there are no reassuring ‘OK’ messages!
Step 4: Check there are no unowned drives
CONTROLLER1> disk show -n disk show: No unassigned disks
Step 5: check it has become a spare (output clipped for brevity)
CONTROLLER1> vol status -s Pool1 spare disks (empty) Pool0 spare disks RAID Disk Device HA SHELF BAY CHAN Pool Type RPM Used (MB/blks) Phys (MB/blks) --------- ------ ------------- ---- ---- ---- ----- -------------- -------------- Spare disks for block checksum spare 0b.01.9 0b 1 9 SA:B 0 SAS 10000 857000/1755136000 858483/1758174768
All looks good!
