leizerbeam wrote:interesting feature request... since CDP is replicating each I/O transaction (or almost every transaction) synchronously - i wonder what your RPO expectations are to backup targets (which are typically slower than primary)? Do you expect improved RPO to… sub hour or sub day (how many hours exactly) to backup targets?
If there are too many changes to write to the target, the changes are queued. If the queue is exceeded then it will trigger a synchronization, and you might loose part of that point in time until it can catch up. Most likely the bottleneck will be the WAN. If you have a WAN connection fast enough to replicate in real-time (CDP) then you probably have the budget for fast storage at the target site.
With fast enough storage and WAN links you should be able to achieve an RPO of seconds even during peak usage.
At least this is my understanding of how it will work with VEEAM CDP.