Which two storage efficiencies are enabled by default on NetApp AFF systems?

To find out which two storage efficiencies are enabled by default on NetApp AFF systems, you need to look at the documentation that explains the inline storage efficiency enablement on AFF systems. According to this document1, the following storage efficiency features are enabled by default on all newly created volumes on AFF systems:

Inline compression: This feature reduces the amount of data written to disk by compressing data blocks before they are written to disk. Compression can reduce the storage space required by up to 50% or more, depending on the data type and compressibility.

Inline deduplication: This feature eliminates duplicate data blocks within a volume before they are written to disk. Deduplication can reduce the storage space required by up to 90% or more, depending on the data type and similarity.

You do not need to enable postprocess compaction or postprocess zero block detection on AFF systems, as they are not supported or required for SSDs. Postprocess compaction is a feature that combines multiple small data blocks into a single larger block after they are written to disk, which can reduce the storage space required by up to 30% or more. However, this feature is only supported for HDDs, as SSDs do not have the same physical limitations as HDDs. Postprocess zero block detection is a feature that identifies and removes blocks that contain only zeros after they are written to disk, which can reduce the storage space required by up to 10% or more. However, this feature is not required for SSDs, as inline zero block detection is already enabled by default on AFF systems23. References :- Inline storage efficiency enabled by default on AFF systems, Postprocess compaction, Zero block detection.