Product : NetApp, NetApp HCI [HCI]/1.8 P1, x86
Feature : Dedup/Compr. Engine, Efficiency, Data Services
Content Owner:  Herman Rutten
NetApp HCI includes data reduction technology, that compresses and deduplicates all incoming data cluster-wide across all volumes.

Compression is completely inline, with no performance impact. During a write, a block is compressed, and during the recycling process blocks are recompressed to provide even greater efficiency.

An internal garbage collection process cleans up blocks that are no longer referenced by any metadata, including Snapshot copies.