If you deploy an additional vSphere Replication server, you might need to increase the memory of the vSphere Replication server if that server manages large numbers of virtual machines.

Problem

vSphere Replication supports a maximum of 100 virtual machines per vSphere Replication server. Replication of more than 100 virtual machines on a single vSphere Replication server can cause memory swapping on the vSphere Replication server, which affects performance.

Results

For deployments that exceed 100 virtual machines per vSphere Replication server, increase the RAM of the vSphere Replication server virtual machine from the default of 512MB to 1GB.

Alternatively, deploy additional vSphere Replication servers and balance the replication load accordingly.