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Running efficiency operations manually on existing data

You can manually run the efficiency operations on the data that exists in the FlexVol volume prior to enabling deduplication or data compression. Deduplication or data compression followed by deduplication can be run by using the sis start -s command.

About this task

If only deduplication is enabled on a volume, then deduplication runs on the data. However, If deduplication and data compression are enabled on a volume, data compression is run initially followed by deduplication.

When you run data compression on existing data, by default the data compression operation skips the data blocks that are shared by deduplication and the data blocks that are locked by Snapshot copies.

You can run a maximum of eight deduplication or data compression operations concurrently per node and the remaining operations are queued.

Step

  1. Run deduplication or data compression followed by deduplication manually on the existing data by entering the following command:sis start -s path
    path is the complete path to the volume.

Example

The following command allows you to manually run deduplication or data compression followed by deduplication on the existing data in the volume VolA:sis start -s /vol/VolA