Vol Options/Thin Provisioning

Once volume guarantee is set to none the volume is considered thin provisioned.  If thin provisioning is being used, I recommend these for most data sets:

Block:

·         Turn on vol autosize

·         Turn off snapshot reserve

·         Turn off fractional reserve (depends on the workload)

·         Turn on snap autodelete (based on the size taken up by snapshots or their age)

o    commitment=try

o    trigger=volume

o    target_free_space=20%

o    delete_order=oldest_first

o    defer_delete=user_created

o    try_first=volume_grow

Turn off LUN reserve

Turn off LUN Space guarantee 

File:

·         Turn on vol autosize

·         Turn snapshot reserve=20%

·         Turn on snap autodelete (based on the size taken up by snapshots or their age)

o    commitment=try

o    trigger=snap_reserve

o    target_free_space=20%

o    delete_order=oldest_first

o    defer_delete=user_created

o    try_first=volume_grow