Dell Storage Manager 2020 R1 Administrator's Guide

Data Eligible for Data Reduction

To reduce the impact of data reduction on read and write operations, a limited amount of data is eligible for compression and deduplication. Data Reduction Input limits the type of data that is eligible for data reduction. The following options are available for Data Reduction Input:

• Inaccessible Snapshot Pages – Allows Data Reduction to process data frozen by a snapshot and made inaccessible by new data written over the original data in the snapshot.
• All Snapshot Pages – Allows Data Reduction to process data frozen by a snapshot.