Veeam M365 On-Prem backup

[NN25]

Hi all,

Does anyone do the backup of Exchange and SPO online to on-prem storage from Azure VM?

Why is the backup to NAS devices not recommended?

And what is the best solution for backing up on On-prem iscsi and for on-prem object storage?

Thank you!

[Mildur]

Hello Nikola

Why is the backup to NAS devices not recommended?

For NAS devices, iSCSI is the recommended protocol to connect to the NAS.
But running a jet database based repositories on SMB protocol is not recommended. Databases must be always online and active. Therefore the connection between the VB365 server and SMB share must be reliable and stable, or database corruption may occur. You can still use it, but please keep the requirement, limitations and considerations in mind. And we only provide experimental support for it: https://www.veeam.com/kb2971

Does anyone do the backup of Exchange and SPO online to on-prem storage from Azure VM?
And what is the best solution for backing up on On-prem iscsi and for on-prem object storage?

If you want to use NAS as an on-prem backup repositories over ISCSI, then you need to deploy a VB365 proxy server in your on-prem environment.
Running a database on your onprem NAS through iSCSI mounted on an Azure VM is a bad idea performance wise. Never connect an ISCSI volume over the internet if you have a low bandwidth (upload/download).
And also consider connection loss of just a few hundreds milliseconds, which may dismount the mounted volume from the proxy server. --> possible database corruption incoming!

An additional proxy server in your local requirement is not strictly necessary if you use object storage. With object storage we don't use databases. Connection losses are much better handled as with an "must always be active"-iSCSI connection.
You can also expect most new features for VB365 repositories provided for object storage repositories only. Object storage is our recommended storage solution for Veeam Backup for Microsoft 365.

Best,
Fabian

[NN25]

Hi Fabian,

Thank you for providing the information!

So best use case is:

To have on-prem proxy and server and attached object storage for backup.

If the storage is NAS device, it is best solution to have an on-prem proxy server and attach that NAS device as iscsi?

[Mike Resseler]

Well, I would indeed recommend always object storage (S3 on-prem or any cloud provider that we support). However, the proxy and server doesn't has to be on-prem. I have many customers that run their infrastructure in AWS or Azure and are very happy with it. It all comes down to cost right .

That said, Jet DB is something we don't invest a lot in, but it works VERY well for small customers. So it kind of depends of your side in users, total storage... whether Jet DB is a good solution for you. And please keep Mildur's great explanation around jet DB in mind if you would go for it. (I could have not explained it better than he did )