I notice if I try to setup backups, either the built in way or with PBS, if VM IDs match across the two clusters then VMs from the other cluster show up in the backup list for the one that has a matching ID. Would this be problematic, like would they keep overwriting each other? What is a good approach to handle backing up multiple clusters?
[SOLVED] Backing up multiple clusters to same location
- Thread starter Red Squirrel
- Start date
That's what "Namespaces" are for 
The simplest approach is to create a namespace for "cluster-A" and one for "cluster-B". Both may live in the same datastore, sharing the .chunk-store and deduplication mechanism. Then you can have vmid 100 in two instances, one in each namespace.
https://pbs.proxmox.com/docs/storage.html#backup-namespaces
https://pbs.proxmox.com/docs/terminology.html#backup-namespace
The simplest approach is to create a namespace for "cluster-A" and one for "cluster-B". Both may live in the same datastore, sharing the .chunk-store and deduplication mechanism. Then you can have vmid 100 in two instances, one in each namespace.
https://pbs.proxmox.com/docs/storage.html#backup-namespaces
https://pbs.proxmox.com/docs/terminology.html#backup-namespace
Ok just found that option on PBS and created a namespace, seems to work now, thanks!
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Hey @Red Squirrel , you can mark this thread as SOLVED by editing the first message and selecting the matching subject prefix.
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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox