CDP and number of VMs

[werner.vergauwen]

All

Apparently there is something that eludes me with CDP policies. From what I understood from the docs and from this forum, there is a limit on the number of VMs (actually disks) per policy. I can understand that the number of proxies and their cache size impacts the number of VM IOfilters that can send their data to said proxies.

The way I understand IOfilter is that it is attached to a VM and autonomously sends it data to the CDP proxies. But if that is correct, then I fail to see the difference in processing between 1 CDP policy with 100 VMs or 2 policies with 50 VMs each.

Could someone please help me understand what I am missing?

thanks

[veremin]

Can you provide a source of this information? I'm wondering cause we did have the said per-policy limitations, but only at the time of beta releases. In GA builds there are no such requirements and you can process by one CDP policy as many virtual disks as you want to, so long as the total number is within per-ESXi and per-vCenter limits. Thanks!

[werner.vergauwen]

Thanks for the reply, most helpful

The info comes straight from the online help (https://helpcenter.veeam.com/docs/backu ... ml?ver=110)
Somewhere in a box, marked Important, it says

We recommend to add not more than 50 VMs or 200 virtual disks in one CDP policy.

Also, in our setup we have introduced close to 300 VMs and we notice that only 30% of them are compliant. The other 70% seems to be failing for the most part, and lagging behind. What is even more weird is that this is a "floating" 30%, meaning not always the same machines that are failing. Which is why I was looking for an explanation.

But if I understand you correctly, my original interpretation is still valid, and there should not be any reason not to have 300VMs in one single policy? And if that is the case, then perhaps we should open a ticket.

thanks

[veremin]

1) The documentation will be corrected, we have already reached the corresponding team
2) Yes, this will be the best course of actions. Once we have your ticket number, we can ask QA team to join the investigation process

[veremin]

The documentation has been updated, thanks again for raising this; appreciated!