Home > Data Protection > PowerProtect Data Manager > PowerProtect Data Manager: Microsoft Exchange Backup and Recovery > Parallelism for Microsoft application agent backup
To configure the parallelism setting for a centralized backup of Exchange databases, set the clientParallelism parameter value in the userlockbox.cfg file on the Exchange server host.
Based on the number of CPUs on the host and the parallelism setting, the application agent uses the following effective parallelism value for a centralized Exchange backup:
If the effective parallelism value is 8, then 8 threads are created for the Exchange backup, with each thread assigned to transfer either an EDB file or the related log files. An asset transfer is complete only when an EDB file and the related log files are both copied to the DD system. Using 8 threads, 4 assets are backed up in parallel from the host.