NVMe for booting. What size?

[WhiteTiger]

I want to install Proxmox on an HP DL380p Server with 2 Xeon 6 cores CPUs, 64GB of RAM and 8 300GB HDDs.
For booting I want to install an NVME controller with two 1TB Sabrents to handle Mirroring. However, it seems to me an excessive and wasted space.
What do you recommend?
Thanks in advance for the advice.

 

[Dunuin]

Proxmox itself will run fine with just 32GB of storage. But keep in mind that you might want to store VM backups, ISOs and LXC templates somewhere. But you could store that on an SMB/NFS share or an Directory Storage on your VM pool too.

PBS likes SSDs for storing backups because it needs to store millions of chunks and scans all of them regularily. So maybe you want to use the remaining space as a PBS datastore so you loose no VMs if your HDD pool for VMs degrades. Sure, your boot pool could degrade too so that you loose your backups but in that case your HDD VM pool is hopefully still healthy so you would only loose the VMs configuration but not the virtual disks. And you can always backup your BPS datastore to a NAS or USB HDD and import it later after installing a fresh PVE+PBS. Just make sure you backup your PBS keys too.

 

[ph0x]

However, installing in a 32 GB partition is just fine, since you can do what you want with the remaining space, i.e. create a partition for said cases.