Question about storage

chrisb1

Member
Aug 14, 2021
12
0
6
Hi everyone,
I started my proxmox-journey with a minimalistic storage concept (only a single 480GB SSD with LVM) for testing purpose.
As time flies by I have a reasonable homelab setup with multiple VMs and I figured out, that only one SSD without redundancy might not be the best setup... ;)
Right now I trying to figure out, how I should rebuild my setup.
Current situation:
  • single 480GB SSD
  • LVM with...
    • ~100GB root partition (15% used)
    • ~320GB data partition (20% used), containing VM disk images
  • independant NAS containing VM backups and installation ISOs
Goal: I want to have storage configuration that can resist a single drive fault
Asumption: I have two options: ZFS-mirror (another 480GB SSD) oder RAIDZ1 (another 2 480GB SSDs). Both configs should fulfill my goal with the advantage of RAIDZ1 that I would roughly double my available storage.

Questions:
  • Is there any advantage regarding availability/reliability between ZFS-mirror or RAIDZ1 that I'm not aware of (didn't use ZFS before)?
  • Is it considered ok to have the same "disk pool" for the root partition and the VM-data?
  • I assume the only realistic option to change the storage concept is to reinstall proxmox from scratch an reimport the VMs from backup, right?

Thanks for reading!
 

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