Hi Daw,
If you are just adding a new disk group you can do this through either the System Management Utility (SMU) or CLI.
SMU - Pools topic on the left hand tree > Action > Add Disk Group
CLI - # add disk-group type virtual disks 1.17-20 level r6 pool a
However, you are stating that you wish to add the disk-group in order to expand a volume. If you have overcommit on the Pool for the volume you wish to expand disabled, then you can only expand the volume to the the physical capacity of the pool. For example, if Pool A has overcommit disabled and is 100GB your volume V1 can only by 100GB.
To determine whether overcommit is enabled in the CLI issue: # show pools
Be careful in enabling overcommit if it is not enabled currently. To learn more about thin provisioning you can read the MSA SMU Guide. Also, you cannot expand the size of a replication volume.
If you have the physical space to add another disk-group, use either one of the two methods outlined above to add a new disk-group. Once the disk-group has been added, you can then expand a volume, for example volume V1. You will need to issue the following command in the CLI.
CLI - # expand volume size 100GB V1
In case it is needed here are links to our guides.
SMU - https://support.hpe.com/hpsc/doc/public/display?docId=a00017707en_us
CLI - https://support.hpe.com/hpsc/doc/public/display?docId=a00017709en_us
Also, the MSA2050 has a new firmware release, VL270R001-01. I suggest you should upgrade to the latest firmware first before adding disk-groups or volume expansion. If you need a link to the firmware or release notes please access our MSA Firmware here: https://hpe.com/storage/msafirmware
Cheers,
Shawn
