Commands for displaying space usage information

You use the storage aggregate and volume commands to see how space is being used in your aggregates and volumes and their Snapshot copies.

To display information about... Use this command...
Aggregates, including details about used and available space percentages, Snapshot reserve size, and other space usage information storage aggregate show

storage aggregate show-space -fields snap-size-total,used-including-snapshot-reserve

How disks and RAID groups are used in an aggregate, and RAID status storage aggregate show-status
The amount of disk space that would be reclaimed if you deleted a specific Snapshot copy volume snapshot compute-reclaimable(advanced)
The amount of space used by a volume volume show -fields size,used,available,percent-used

volume show-space

The amount of space used by a volume in the containing aggregate volume show-footprint