- The shadow copy of volume D: was aborted because of a failed free space computation.
- The shadow copy of volume D: became low on diff area space before it was properly installed.
- The shadow copy of volume D: was aborted because the diff area file could not grow in time. Consider reducing the IO load on this system to avoid this problem in the future.
I could try reducing IO load by running fewer backups simultaneously, but the first two I'm not sure how to tackle, or what's causing them.