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PowerProtect Data Manager Appliance 5.16.0.0 Storage Array User Guide

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Protection policy best practices

Before you create a protection policy, note the following best practices:

  • The maximum number of remote systems that you can connect to a PowerStore storage array differs between different PowerStore models. It is recommended that you reuse the storage units created in other protection policies for block volume protection. The PowerStore documentation provides more information.
  • In the Protection Policies window, you can export protection policy data by using the Export All functionality.

Understanding backup terminology and managing backup frequency

When scheduling backups in a protection policy, be aware of the following:

  • Different protection-policy types can use different terminology to describe available backup levels. This terminology can differ not only between protection-policy types, but also from traditional terminology.
  • To avoid high CPU usage that can lead to failure issues, do not schedule backups more often than recommended.

To understand the different backup levels to manage backup frequencies, see the following table.

Table 1. Backup terminology and frequencyTable of backup terminology and frequency
Protection-policy types Available backup levels Description Equivalent traditional terminology Recommended minimum backup interval
Block Volume Synthetic Full Backs up only the blocks that have changed since the last synthetic-full or full backup, and then performs an operation to merge those changes with the last synthetic-full or full backup in order to produce a full backup in storage. Only the changed blocks are copied over the network, but the result is still a full backup in storage. An incremental backup is performed, followed by a merge operation that produces a full backup in storage. 6 hours
Snapshot Saves the state of the volume or volume group and all files and data within it at a particular point in time. Snapshots provide a method of recovery for data that has been corrupted or accidentally deleted. You can use snapshots to restore the volume or volume group to a previous state.   15 minutes

You can increase the backup frequency of a protection policy by scheduling more synthetic-full backups with different retention times to meet your requirements.

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