Symptoms:
A user may wish to gain a better understanding of the function of checkpoints in Zerto Virtual Replication (ZVR).

Solution:

A checkpoint is a marker in between data blocks that references a point in time a user can recover to. When one recovers to a given checkpoint, the recovered volume will contain data changes up until that checkpoint. The checkpoint itself does not contain replicated data.

Note that it is not possible to configure different intervals for checkpoints. Once any protected VM performs a write, the IO is captured by the protected VRA. The protected ZVM sends a checkpoint to the protected VRA and the VRA will send the data and the checkpoint to recovery VRAs.