I am backing up a file server with DPM. There is currently 23.7TB of data being backed up. The replica volume size was 26TB. I ran into a scenario where the volume needed a consistency check. I started the check and let it run. A day later, the check failed saying it ran out of disk space. Turns out, the replica volume had totally filled up. So I added an additional 2TB of space and kicked the job off again. After another day, the job failed and the volume was full again. I've ran consistency checks in the past and they have never needed this much space to finish. In fact, they never appeared to need any additional space at all. I have several questions?
1. Is something not working as it's supposed to?
2. How much space will DPM need to successfully complete the consistency check?
3. Why is the consistency check taking up so much space?