MABS v4 (Azure Server Backup) - online backups fail when more than 8 servers in a single protection group

Question

If there are more than 8 servers in a job group, the online backups fail with

"The operation attempted cannot be performed at this time because maximum number of backups jobs are already running"

I read MABS v4 has a new reg key to allow more than 8x jobs but could not find the key documented.

I found this reg key online for old DPM but setting it to 16 made no change:

HKLM\SOFTWARE\Microsoft\MicrosoftData Protection Manager\Configuration\MaxParallelIncrementalJobs

SQL: 10 (16)

Answer 1

You can increase the number of maximum parallel online backup jobs from the default 8 to a configurable number using the following registry keys (if your underlying hardware and network bandwidth can support it).

The example below increases the limit to 12 jobs.

• [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows Azure Backup\DbgSettings\OnlineBackup]

"MaxParallelBackupJobs"=dword:0000000C

• [HKEY_LOCAL_MACHINE\Software\Microsoft\Microsoft Data Protection Manager\Configuration\DPMTaskController\MaxRunningTasksThreshold]

"6e7c76f4-a832-4418-a772-8e58fd7466cb"=dword:0000000C

For more information, refer this document.