V11 SP8
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Deduplication - DDB Information

Use this dialog box to change the deduplication database information.

Deduplication Database Name

The name of the deduplication database (DDB).

Use space to modify the name of the DDB.

Total size of Application data

The size of data (folders, files, and so on) on the client computer that needs to be backed up.

Total data size on disk

The total size of the data stored on the disk after deduplication and data compression (if enabled).

Total data size on DDB

The total size of the data stored on the disk and the tape (if silo copy is configured).

For example, if the application data was 10 GB, after deduplication the data stored on the disk was 3 GB. If you have silo copy configured, and if 1 GB of data was moved to tape, this option displays the total size of the data stored on the disk and the tape (silo destination) which is 3 GB. The Total Data Size on Disk option displays the data size available only on the disk that is 2 GB.

Creation time of this DDB

The date and time that the active DDB was created.

Estimated baseline size for new DDB

The amount of space required on the disk for a new backup data when the existing DDB is sealed.

DDB Access Path

The following information is displayed for each partition configured for the storage policy copy.

Partition

The number of partitions configured for DDB.

MediaAgent And Partition

The name of the MediaAgent hosting the DDB and the DDB path.

Minimum Free Space (MB)

The total amount of free space that must be available all times on the disk that is hosting the DDB.

By default, the minimum free space required on the volume to host the DDB is set to 5120 MB (5 GB). Use space to modify the amount of minimum free space.

Note: You cannot specify value lower than 5120 MB.

If the disk space size reaches below the size specified, then:

  • The DDB will be marked as offline.
  • Backup jobs will not continue.
  • Pruning of backed up data from disk is prevented until the DDB is available.

Therefore, the minimum free space on the volume must be maintained all the time to avoid backup failures and to reclaim the disk space.

Free Space Warning (MB)

To generate an event message or MediaAgents - Disk Space Low alert (if configured), when the amount of free space on the disk that is hosting the DDB falls below the specified amount.

By default, the minimum free space at which an event message must be generated is set to 10240 MB (10 GB). Use space to modify the value.

Note: You cannot specify value lower than 10240 MB (10 GB).

Deduplication Database creation

Use the following options to automatically seal the existing DDB and create the new DDB when the data size or days or months reach a selected value.

Create new DDB every [ ] days

When this option is selected, a new DDB is created later than the specified number of days.

Create new DDB every [ ] TB

When this option is selected, a new DDB is created when the existing DDB reaches the specified

Create new DDB every [ ] Month(s). Starting from

When this option is selected, a new DDB is created every month based on the time interval in months.

You can create a new DDB with one of the following conditions:

  • Create new DDB every [ ] Days and/or Create new DDB every [ ] TB. If both the options are set, a new DDB will be created if either one of the two conditions is satisfied.
  • Create new DDB every [ ] month(s). Starting from

Total Number of DDB(s)

The number of partitions configured on the DDB.

Total Size of Application Data across all the DDB(s)

The amount of application data backed up for the copy across all DDBs.

Total Data Size on Disk for all the DDB(s)

The total size of backup data stored on the disk after deduplication for the copy across all DDBs.

If you have Silo Copy configured, then this is the total size of backup data stored only on the disk.

Total Data Size for all the DDB(s)

The total size of backup data stored on the media after deduplication for the copy across all DDBs (Sealed and Non-Sealed DDB).

If you have silo copy configured, then this is the total size of backup data stored on the media (disk and tape).

For example, if your application data size was 10 GB, after deduplication the data stored on the disk was 3 GB. If you have silo copy configured, and if 1 GB of data was moved to tape. Then this option will display the total size of the data that is occupied on both disk and the Silo destination which is 3 GB. The Total Data Size on Disk option displays the data size available only on the disk which is 2 GB.

Total Size of Application Data Ready to be freed:

The amount of application data ready to be pruned on the storage media associated with the storage policy copy.