I know that this question has already been answered but just to expand on the correct answers above - the Private RAID groups in a pool are just that - private. That means they can only be managed by the VNX Operating Environment.
Because the RAID type on that tier in the pool is RAID 6 it wouldn't let you add two disks as a valid R6 RAID Group needs to have at least four drives (two of those will be parity drives). Even if you had the four drives, if you added the four drives to your existing pool, rather than expanding the existing Private RAID Group, VNX OE would create a second RAID Group within your pool.
For that reason it is usually best to add the recommended number of drives that are seen when you choose the option to expand a storage pool. Not only does it provide optimal performance but it will also make sure that all of your Private RAID Groups are the same size providing more uniform performance.
dynamox
9 Legend
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November 21st, 2013 08:00
Not possible
Rainer_EMC
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November 21st, 2013 11:00
No
Joshua_Fawcett
35 Posts
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November 22nd, 2013 10:00
I know that this question has already been answered but just to expand on the correct answers above - the Private RAID groups in a pool are just that - private. That means they can only be managed by the VNX Operating Environment.
Because the RAID type on that tier in the pool is RAID 6 it wouldn't let you add two disks as a valid R6 RAID Group needs to have at least four drives (two of those will be parity drives). Even if you had the four drives, if you added the four drives to your existing pool, rather than expanding the existing Private RAID Group, VNX OE would create a second RAID Group within your pool.
For that reason it is usually best to add the recommended number of drives that are seen when you choose the option to expand a storage pool. Not only does it provide optimal performance but it will also make sure that all of your Private RAID Groups are the same size providing more uniform performance.