Advice on ZFS

[antplugger]

Hi All,

I am using proxmox 7.2-5, booting from 2 x 1TB NVME configured as zfs raid 1 also containing my VMs.
I have two unused 500GB NVME drives I would like to add to mix, appreciate any thoughts on the best way to add to the existing config ?
Data security is important to me.

Thanks in advance

 

[Dunuin]

You could convert your mirror into a striped mirror (so raid1 into a raid10) for some more performance. Something like zpool add rpool mirror /dev/disk/by-id/yourFirst500GBDisk /dev/disk/by-id/yourSecond500GBDisk. Then you should get 1,5TB of storage with additional performance.

If you want you could also create three partitions like on the other two SSDs but just with the third partition being used for ZFS being smaller and then write a grub bootloader to partition 1 or use the proxmox-boot-tool to copy the ESP from the 2nd partition of one of the 1TB SSDs to the 2nd partition of the 500GB SDDs. And then use zpool add rpool mirror /dev/disk/by-id/yourFirst500GBDisk-part3 /dev/disk/by-id/yourSecond500GBDisk-part3 instead. that way you could boot from all 4 SSDs.
But should also be fine without it, as you don't really need more than 2 bootable disks.

 

[antplugger]

Thanks a bunch - I went with first option. Works perfectly.
Thanks again