Drives setup recommendation

[jbravo]

Hello guys!

Right now I'm running a single VM per hypervisor as follows:
1x480GB SSD RAID 0 for Centos/Almalinux OS with Qemu/KVM
2x4TB SSD RAID 1 for the VM image (yes a 4TB qcow2 image)
1x8TB HDD RAID 0 for local backups

I'm doing backups remotely, I do local backups as well because it will be faster in case I need to restore.

My plan is to migrate those servers to Proxmox VE. But I'm not sure if I should continue using this drives setup. Because the OS drive is just one and it may fail. Sometimes when that drive fails I can restore it very quickly but I prefer having it on raid.

The server only have 4 x 3.5" bays and I use 3.5" to 2.5" converters to place SSDs on these.

1. Would you install Proxmox in a 2x8TB HDD array where you also store local backups? Or would the performance of Proxmox decrease a lot when it is on a HDD?

2. Would you remove the 8TB drive, and use that bay to put another 480GB SSD to create a raid 1 for the proxmox OS and do remote backups?

3. Would you keep OS and Backup drives as drive 0 and be ready to restore in case of a drive faliure?

4. Something else?

Thanks!

 

[Dunuin]

1. Would you install Proxmox in a 2x8TB HDD array where you also store local backups? Or would the performance of Proxmox decrease a lot when it is on a HDD?

Thats not really important. PVE will work fine on HDDs. Its more important to have the system mirrored to reduce downtime. You just really want enterprise SSDs for the VM/LXC storage.

So yes, mirrored HDDs for PVE+local backups + mirrored SSDs for VM storage would be a good idea.

You also might want to have a look at the Proxmox Backup Server. Its way faster than Vzdump and only consumes a fractionvof the capacity when keeping multiple backups of your guests. PBS can run baremetal beside PVE, in a LXC or a VM in case you can't use a dedicated server for PBS.