You can set up a primary storage pool so that when a client backs up, archives, or migrates a file, the file is written to the primary storage pool. The primary storage pool is also simultaneously stored into each copy storage pool that is specified for the primary storage pool.
You can also enable the simultaneous-write function so that active client backup data is written to active-data pools at the same time it is written to the primary storage pool. The active-data pools must be specified in the definition of the primary storage pool. The clients whose active data must be saved must be members of a policy domain that specifies the active-data pool as the destination for active backup data.
The simultaneous-write function is not intended to replace regular backups of storage pools. If you use the function to simultaneously write to copy storage pools and active-data pools, ensure that the copy of each primary storage pool and of the active-data in each primary storage pool is complete by regularly issuing the BACKUP STGPOOL command.