Best use of replication on 10 Gbps

[NADSYSTEMS]

Hello,

We have just set up 10 Gbps connections on our production and DR ESX.

Our environment

Production site : 1 cluster of 2 ESX connected to SAN area over FC.
DR site : 1 ESX with internal storage.
Veeam Server : 1 physical Windows Server 2019 connected to SAN over FC.

Network part

Production site : VM Network and Management Network are on 10 Gbps on the 2 ESX.
DR Site : VM Network and Management Network are on 10 Gbps.
Veeam Server : Network is on 1 Gbps.

Veeam Proxies

Physical Veeam Server
1 VM on production ESX cluster.
1 VM on DR ESX.

My question

Unfortunately, our physical Veeam server does not have a 10 Gbps connection...

My question is therefore whether with this environment and without 10 Gbps on the physical Veeam server, how can I take full advantage of the new 10 Gbps connections on the ESX?

Using hotadd mode with both proxy vms?

Using nbd mode?

Thank you in advance for your help!

[vmtech123]

I have the opposite. 10Gbps physical proxies and Veeam server is a VM.

If the ESXI hosts are 10Gbps, and your Virtual proxies are 10Gbps, you should be good.

I'd watch the data though as you might end up maxing out that host if there is much else running on it.. You can control this on the Veeam server. under NW traffic rules

[NADSYSTEMS]

Thanks for your feedback !

Here is my replication job, and in my opinion it does not work to the maximum of its possibilities...

https://imgur.com/9Jyxhe3

Transport mode : hotadd
Proxies : Manually defined in the job (the 2 virtual proxies)
Bottleneck : source
Processing rate : 272 MB/s
Max read speed : 467 MB/s
Max transfer speed : 148 MB/s

These values, in particular the transfer speed does not seem to evoke 10 Gbps...

Or maybe it's me who doesn't understand how it works

[PetrM]

Hello,

According to the screenshot, the bottleneck is on Source. It means that the slowest processing stage is data read performed by virtual proxies in HotAdd mode. You can try Network (nbd) mode to take advantage of your 10 Gbps connection, because in this mode backup proxy and ESXi communicate over the management network, see more info on this page. However, data read speed also depends on datastore latency, on load of ESXi itself (since you're using virtual proxies), not only on connection speed between proxy and ESXi. Most likely you will have the same processing rate with the bottleneck on Source, but anyway it's worth trying.

Thanks!