I'm trying to replicate some large VMs (12TB of data) over a WAN link (50Mbps sym). Change rates are fairly low, but the digest calculation is just taking too long. Working with Veeam support (02133986), I'm doing all I can to make the calculation go faster (proxy's at each site, sufficient compute resources). This wouldn't be such an issue, but regular VM backups cannot run while the replication job is running. It sounds like the only way around this would be to copy the backup files to a secondary repository and use that as the source for replication. This isn't ideal for obvious reasons. Any other ideas? At this point I'm going to investigate other replication options to see if they might work better (vSphere replication and SAN to SAN).