Data Reduction Estimation Tool

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The Data Reduction Estimation Tool (DRET) is a host-based command-line 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, IBM® provides the highly accurate DRET to support both deduplication and compression. The tool scans target workloads on various earlier storage arrays (from IBM or another company), 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 file. The readme file also describes how to use DRET on various host servers.

Note: You can also use the management GUI or the command-line interface to run the integrated Comprestimator Utility to gather data for potential compression savings for volumes in data reduction pools.

For more information about DRET, see https://www.ibm.com/support/pages/node/6217841. For more information about Comprestimator, see https://www.ibm.com/support/pages/node/6209688.