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Managing storage performance with PowerStore is simple and intuitive. The performance policy can be adjusted at the volume or vVol level by selecting high, medium, or low. Performance policies are relative in PowerStore, so leaving all volumes at the default of medium provides equal performance to all volumes. The volumes all perform at the highest level until a PowerStore volume is set to a different performance policy.
Selecting a performance policy sets a relative priority for the volume using a share-based system such that when resources are constrained, the resource with the higher performance policy receives priority. If there is no PowerStore resource constraint, the volumes perform equally.