Hi team
I am creating and testing some DR procedures including vmware VM restore . I have done some restore performance tests. My commvault is. 11.28. I use hotadd mode (the most efficient transport in my environment because of thin disks). Media agent and vm proxy servers are windows 2019. And restore speed of large single VM seems to be below expectations.
It is about 990 GB/hr (275 MB/s, 2,2 gbps).
What is a bootleneck ? CPU or MEM is not a limit I believe but I noticed that the data transfer speed between media agent and proxy servers during restoring does not exceed 2.2 gbps (240 MB/s) over a 10 gbps network. It seems to me not enough.
I checked outside commvault what can I expect from my hardware. The robocopy network transfer tests of a single relatively large 50 GB file (vmdk) from media agent to proxy and shows a transfer on LAN net of no less than 7 gbps (870 MB/s). ?
3 times better than in commvault process ? Is it expected behaviour ? Why ? Can I tune this ?
I have tried with nnumpipeline parameters, optimize for concurent LAN backups, streams or network agents options but without effect. Dedup or compression also have minor influence.
Any advive would be appreciated.