I have two servers that seem to be artificially limited on the number of copies:
- Server 2008 R2 Service Pack 1
- 6 copies
- 50GB is allocated and plenty of disk space to use that much
- 8GB in use
- Server 2012 R2
- 10 copies
- 100GB is allocated and plenty of disk space to use that much
- 10GB in use
MaxShadowCopies is not configured on either. We do 2 copies a day. Neither seem to have skipped or missed a copy, but appear to just be "truncated" before they reached the disk limit.