2.The CSM opens the IDB, reads the information about the needed media, and writes the information about the object consolidation session, such as generated messages, to the IDB.

3.The CSM locks the devices. The session is queued until all read Media Agents and the minimum required write Media Agents are locked, with the same timeout as for backup. If the resources are still unavailable after the timeout, the session is aborted.

4.The CSM starts the Media Agents on the systems with devices that will be used in the session. The Media Agents load the source and target media allocated according to the backup policies.

If destination devices are not specified per object, Data Protector selects them automatically from those you selected in the object consolidation specification according to the following criteria in the order of priority:

•destination devices with the same block size as source devices are selected before those with a different one

•locally attached devices are selected before network attached devices

5.One Media Agent reads the full object version. It sends the data to another Media Agent that reads incremental object versions. The latter Media Agent does the actual consolidation and sends the data to the Media Agent that writes the data to the target media.

If the full backup and the incremental backups reside in the same file library, the same Media Agent reads all the backups and consolidates them.

If the block size of the source device is smaller than that of the destination device, blocks are repackaged.

6.When the object consolidation session is completed, the CSM closes the session.

How many sessions can run concurrently?

A number of object consolidation sessions can run in the cell at the same time. Object consolidations sessions are treated like backup sessions and their number is limited by the same factors.

Queuing of object consolidation sessions

Timeout

When an object consolidation session is started, Data Protector tries to allocate all needed resources. The session is queued until the required minimum resources are

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How Data Protector operates