Volume space has increased on a FlashArray and shared space decreased by the same amount. What does this indicate?

When a volume or snapshot is deleted, any data blocks that were shared (deduplicated) with other volumes become unique to the remaining volumes. The FlashArray re-categorizes this space, moving it from the "Shared Space" metric to the "Volume Space" metric. The total used space on the array does not change, but the accounting shifts. This perfectly matches the scenario where Volume space increases and Shared space decreases by the same amount, indicating that previously shared data is now uniquely owned.

A. Space reclamation falling behind would mean deleted data is not yet freed, keeping volume space artificially high, not causing a shift from shared space.

B. Removing hosts only detaches initiators from the array; it does not alter any volume data or space allocation metrics on the array itself.

1. Pure Storage, Inc. (2023). FlashArray GUI - Space. Pure Storage Support Knowledge Base, Article 000001089. This article defines "Shared Space" as physical space occupied by data referenced by multiple sources (e.g., clones or snapshots) and "Volumes" as the logical space written to volumes. The deletion of a source that shares data causes the space to be re-attributed to the remaining volumes.

2. Pure Storage, Inc. (2023). Purity//FA User Guide. Section: "Monitoring and Managing Storage > Capacity". This guide explains the components of the capacity bar, where the relationship between shared space, volume space, and snapshot space is detailed, illustrating how the deletion of objects containing shared data affects these metrics.