What do you think of optimal IOPs for NVMe disks?

[Yakooza]

Hi,
I was wondering, what do you think of the optimal Total IO per sec, Read MB and Write MB limit for the VMs on RAID1 2TB NVMe?
It would be around 30 to 50 VMs running on KVM.

Thank you in advance

 

[wolfgang]

Hi,

The maximal possible IO in the VM dependence on multiple factors.
CPU Speed(Clockcycle), VM IO pattern, VM Bus Model, IOthreads enabled, the NVME.

If I would have to run 30 to 50 VM on one (two raid1) NVMe I would take one of the fastest Enterprise NVMe what you can get.

PCIe 4 Samsung PM1735 3.2TB
PCIe 3 Micron 9300MAX 3.2TB