Hello John, You are going to have to look them up individually. I am not seeing a command to get the volume_id with all volume names. Please let us know if you have any other questions.
I can get a list of all the volumes on an array but this is limited to just the volume hex id (ie: volumeId).  Is it possible to also include the "volume_identifier" field, or does each volume need to be looked up individually by its volumeId? Thanks, John
list all volumes and identifiers via Unisphere REST?