Backup server planning

[SkyTreeRocket]

Greetings everyone...
I am working out the resources for physical backup server with local disks. Might I know if my workout is correct?
Data size: 30TB (Exchange + File Share)
Policy: 30 daily, 4 weekly, 12 monthly, 3 yearly
Source: Sangfor HCI (requires to install agent), single site
As refer to VSE https://calculator.veeam.com/vse/
Backup Server + DB + Repository = 8 CPU, 20GB RAM for Veeam to work
(No Proxy and Enterprise Manager required)
And will add some resources for Windows OS

Regarding storage, 249.43TB from VSE
So I add some buffer and for Windows OS with ~300TB disks space

Assumptions:
ReFS
No backup copy job
Generic Pessimistic: daily change 10%, compress ratio 50%, annual growth 10%

Is my thinking correctly?

[Mildur]

Hi Tazd

8 CPU, 20GB RAM for Veeam to work

Our recommendation for the repository server is "4 GB RAM, plus not less than 1 GB RAM for each concurrently processed machine disk". With a lot of Agent backups and their parallel disk processing, a lot of concurrent tasks will be opened.
Our user guide recommends to have at least 1 GB RAM per Task. 20GB with all other components means, you would be able to run backup for approximately 8-10 disks simultaneously to be within our recommendations.
https://helpcenter.veeam.com/docs/backu ... repository

And our Best practice for repository server is to use 4GB RAM per CPU Core. Using it as a RefS repository adds another 0.5GB RAM per 1TB of reFS storage.
https://bp.veeam.com/vbr/2_Design_Struc ... ositories/

Generic Pessimistic: daily change 10%, compress ratio 50%, annual growth 10%

I see that you have chosen 3TB daily change rate and approximately 3TB yearly growth.
Do you have collected information from your current environment to confirm this numbers? Just to be sure that you don't make estimation on wrong numbers.

May I ask, do you have a second backup storage solution in mind. And a backup copy for immutable/air-gapped backups?
Instead of building a windows backup server on this physical host, you could use it as a hardened repository based on Linux. This would give you a immutable backup of your agent backups. the backup server itself can run as a VM on your HCI environment.
https://www.veeam.com/blog/hardened-lin ... tices.html

Best,
Fabian