Capacity Efficiency panel

The Dashboard Capacity Efficiency panel summarizes the space savings and efficiency of the selected storage systems.

Clicking the title opens the Capacity Efficiency view on the Systems screen.
You can hover over chart segments to display the percentage of free space (space savings) and the percentage of used space.
Savings is the amount of unused space.
Used is the amount of reserved space (without RAID overhead).
Usable is the amount of usable space expressed as virtual size.
Overall compaction is the ratio of usable space to used space (usable:used). A larger ratio indicates a higher efficiency and greater space savings.