You can view the amount of space savings achieved through deduplication and data compression on a volume by using the volume show command.
The space savings in Snapshot copies are not included when calculating the space savings achieved on a volume. Using deduplication does not affect volume quotas. Quotas are reported at the logical level, and remain unchanged.
cluster1::> volume show -vserver vs1 -volume VolA Vserver Name: vs1 Volume Name: VolA .......... .......... Space Saved by Storage Efficiency: 115812B Percentage Saved by Storage Efficiency: 97% Space Saved by Deduplication: 13728B Percentage Saved by Deduplication: 81% Space Shared by Deduplication: 1028B Space Saved by Compression: 102084B Percentage Space Saved by Compression: 97% .......... ..........