The Data Reduction Estimation Tool (DRET) is a command-line, host-based utility for estimating the data reduction savings on block storage devices. To help with the profiling and analysis of existing user workloads that must be migrated to a new system, we provide the highly accurate DRET to support both deduplication and compression. The tool scans target workloads on various legacy storage arrays, merges all scan results, then provides an integrated system-level data reduction estimate.
You download DRET and its readme file to a Windows client and follow the installation instructions in the readme. The readme file also describes how to use DRET on a variety of host servers.
Go to https://www-945.ibm.com/support/fixcentral/ to find the tool and its readme. Data reduction is only supported Lenovo Storage V5030 and Lenovo Storage V5030F systems.