Home > Storage > PowerMax and VMAX > Data Protection > Dell EMC PowerMax and VMAX All Flash: Snapshot Policies > Introduction to policy compliance
Policy compliance is measured against the count and intervals of the existing snapshots of the SGs that are assigned to the policy.
The snapshots must exist and be available for user action such as a restore or link operation. The existing snapshots must have been taken at the expected scheduled time and in a valid, non-failed state.
Policy compliance is available in Unisphere for PowerMax and the REST API. However, some Solutions Enabler outputs contain information that is related to policy compliance.
Unisphere for PowerMax reports high-level, color-coded policy compliance in multiple locations. In each location, you can obtain further information by clicking the color-coded icon.
Unisphere automatically runs a compliance check each hour. Changes that affect policy compliance may not be immediately displayed in the dashboard. If a true failure condition is detected, for example if a new snapshot creation fails, the array calls home before the next compliance check. This behavior is important to consider, especially during feature testing.