What is the maximum size of a compression group?

8 KB is a common storage block size used in file systems and databases but does not represent the maximum compression group size defined by ONTAP.

4 KB corresponds to a standard memory page size or minimum WAFL block size in some contexts but is smaller than the ONTAP-defined compression group maximum.

In NetApp ONTAP, a compression group is the fundamental unit on which inline compression operates, and its maximum defined size is 32 KB. Data within a single 32 KB compression group is compressed together as a unit, and this boundary determines both the compression ratio potential and the read amplification cost when accessing compressed data.

64 KB exceeds the maximum compression group size supported by ONTAP inline compression and is not a valid value for this parameter.