Topics | How To | Related Topics
Incremental Storage Policy Considerations
Support Information - Storage Policy
For iDataAgents, to reduce your backup window and utilize storage resources effectively, you can define a storage policy for full backups and another storage policy, called an Incremental Storage Policy, for non-full backups.
In such a configuration, it is recommended that the full storage policy use tape media, and the incremental storage policy use disk media to effectively utilize the available resources.
In the following example, Subclient A is backed up using a storage policy which has the incremental storage policy option enabled. Hence, the full backup uses a storage policy that backs up to a tape library. The incremental and differential backups use a storage policy that backs up to disk media.
To configure your subclients to use this feature, the incremental storage
policy must be enabled in the Storage Policy Properties dialog box.
In the sample image, SP_Mag_Library2_2 is enabled as an Incremental Storage Policy for storage policy SP_Tape_Library1_1.
Multiple storage policies can enable the same storage policy as its Incremental Storage Policy.
However, within the storage policy that is enabled as an Incremental Storage Policy, you will not be able to enable the Incremental Storage Policy option, as it is not available.
In the sample image that follows, the Incremental Storage Policy option
is not available in SP_Mag_Library2_2, as
it is already enabled as an Incremental Storage
Policy for SP_Tape_Library1_1.
For this reason, the list of incremental storage policies displayed in this dialog box will include only those storage policies that do not have an Incremental Storage Policy enabled.
|In the sample image that follows, the list of incremental storage policies in SP_Mag_Library3_3 does not include SP_Tape_Library1_1, as SP_Tape_Library1_1 has an Incremental Storage Policy enabled.|
Once this is done, your subclients that are configured to use the storage
policy that has the incremental storage policy option enabled will use different
storage policies for full and non-full backups. This information can be
viewed from the Storage Device tab of the
Subclient Properties dialog box.
Note that the name of the Incremental Storage Policy is also displayed.
If you want to perform a synthetic full backup using an alternate MediaAgent (one other than the MediaAgent used for the Primary backup), you must configure an Incremental Storage Policy.
Back to Top