what happens with Fast Clone savings when downloading partial/all backups from capacity tier to an empty performance tier? For us it is important for sizing a kind of a standby Linux XFS repository where we want to download backups (maybe only some, maybe everything) until environment is finally ready for restores (Ransomeware attack, DR case etc). Currently we have 2 SOBR, Veeams knows about 960 TB and 670 TB backup data, but only 220 and 170 TB are actually on XFS filesystem on performance tiers, thanks to reflinks/fastclone. Do we have to size for actual used storage or the backup size Veeam has in its database?
The information in docs is not 100% clear to me, respectively I want to clarify if my understanding is right so that the sizing will not be an issue in a DR case.
There is also the idea to keep a Veeam VBR + empty repo instance in an air-gapped environment as hot-standby. No access to on-prem repos. We assume everything else will be gone in DR case. I know that we can attach the capacity tier in a DR case to this second VBR instance. But there is also the idea to use it for continues restore tests from PROD capacity tier into the DR environment. As far as I know, it is not supported to connect 2 VBRs to one capacity tier. This use case does not sound unreasonable to me, what other options are there if we want to do this from a second environment?
https://helpcenter.veeam.com/docs/backu ... ml?ver=120
https://helpcenter.veeam.com/docs/backu ... ml?ver=120Veeam Backup & Replication uses the Fast Clone technology only if you download all offloaded backups back to the performance extents using the Download option. Fast Clone is not supported for the Copy to Performance Tier option.
Limitations for Capacity Tier - User Guide for VMware vSphere
• Full restore points downloaded from capacity tier to XFS performance extents do not use Fast Clone.