Estimating compression savings
The management GUI has a built-in Comprestimator utility that uses mathematical and statistical algorithms to estimate the potential savings for the system. If you are wondering whether to purchase the compression license for the system, this tool helps determine the capacity that you might save by using compression.
Estimating each volume does not take long to complete; however, analysis is completed on one volume at a time per node. In large configurations, estimation results can take some time. If system page displays Calculating savings, check the results every few hours.
After the analysis completes, you can download a savings report that shows estimated savings for all the volumes with enough data to be analyzed. This report lists the volumes on the system and their potential compression savings. New volumes that contain small amounts of data are excluded because the volume does not contain enough data to accurately estimate the compression savings. To download a report, select . The analysis for potential savings can be used to determine whether purchasing a compression license for the system is necessary to reduce cost of extra storage devices. To purchase a compression license, contact your sales representative for details.
For details on compressed volumes and compression, see Compressed volumes.