Hidden Snapshots

When you install an array, you typically set up volumes, as well as volume collections and snapshot schedules. If you do not set up any volume collections or snapshots, the array automatically generates a snapshot every hour. These snapshots are termed hidden snapshots.

While individual hidden snapshots are not listed under the Snapshot tab, hidden snapshots usage is part of the calculation of the Snapshot Usage column on the Space tab. Similarly, if you schedule snapshots that occur more than one hour apart, the array continues to generate hidden snapshots. As soon as you decrease the frequency of snapshots to something less than one hour, the array stops taking hidden snapshots.