Necessity of connection between Veeam Backup Server and ESXi

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Necessity of connection between Veeam Backup Server and ESXi

Veeam Logoby Tos » Wed Apr 05, 2017 7:47 am

Hi
Our prospect customer have in trouble because Veeam Backup Server can not connect to vmkernel of source ESXi hosts on their lab.

They want to replicate VM from source ESXi host to target ESXi host.
They plan to create Veeam Backup Server VM on target ESXi host.
They also plan to create Proxy VM on source and target host.
They use vCenter in each host.
The source Proxy can connect to vmkernel of source ESXi hosts and both vCenter.
The target Peoxy and Veeam Backup Server can connect to vmkernel of target ESXi host and both vCenter.

We have questions.

##Q1
Even if Veeam Backup Server can connect to vCenter, does Veeam Backup Server need to be connected to vmkernel of the ESXi host ?

With the above configuration, Veeam Backup Server can not connect to vmkernel of source ESXi hosts.
The below requirement is descreibed in Veaem document.
" TCP 902 Port used for data transfer to ESX(i) host."
https://helpcenter.veeam.com/docs/backu ... =95#backup

But Veeam Backp Server can connect to source vCenter, so we think the replication job can be created.
Also source Proxy can connect to vmkernel, so we think VM data can be replicated.


##Q2
If Q1 yes, is it possible to use NAT for connection to vmkernel of ESXi ?

We know that we can use " Run server on this side" setting for NAT when adding Windows.
But when adding vCenter or ESXi host, we can not use this setting.
https://helpcenter.veeam.com/docs/backu ... tml?ver=95

Regards
Toshi
Tos
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Re: Necessity of connection between Veeam Backup Server and

Veeam Logoby ssjgogeta » Wed Apr 05, 2017 11:56 am

Without understanding the use case or topology:

##Q1 = Yes. The Veeam backup server needs to be able to connect to a vmk port group that is enabled for management traffic on each ESXi host.

##Q2 - Why would you want to complicate things with NAT? You can always create a secondary vmk port group on each ESXi host that carries management traffic on the same subnet as the Veeam backup server in each datacenter.
ssjgogeta
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