If the backup job is failed for some reason, could DPM re-run the job automatically?

or we need to retry it manually? thanks.

Hi,

Auto-retry was introduced in DPM 2010.

Automatic rerun of failed jobs
DPM 2010 and later now automatically reruns failed jobs by default. Jobs that dont run frequently are automatically retried after the failure. By default, DPM retries the failed job only once and 1 hour after the original failure.
This also changes how DPM shows alerts related to failures. If a job fails, you will not see an alert immediately and DPMs automatic attempts to fix the issue will kick in. The alert will become visible when one of the following conditions is met:

1. DPM decides not to auto-rerun for the failure. This can happen if the next scheduled job is less than 4 hours away or if the job failed because it was canceled.
2. The issue is not fixed automatically within 3 hours of the alert being created.
3. DPM has attempted the automatic rerun as per the configured settings, but the retries have not fixed the issue.
4. If you perform a modify or delete operation on a protection group and DPM has a pending issue for that protection group to take automatic action for at that time, the alert will become visible and DPM will not take action for that issue.

Please see the below blog for tuning auto-heal features.

How to use and troubleshoot the Auto-heal features in DPM 2010

DPM 2010 now automatically reruns failed jobs by default. Jobs that dont run frequently are automatically retried after the failure. By default, DPM retries the failed job only once and 1 hour after the original failure.

Also you can check below link

http://blogs.technet.com/b/dpm/archive/2010/02/16/dpm-2010-helping-you-meet-slas-with-less-effort.aspx