Can I create RAID10 after installing Proxmox VE on the first disk?

[einverne]

I got a dedicated server from So you Start, it has 4 * 2T disks, so I install the Proxmox VE on the first disk. So I wonder can I create RAID10 when I enter the OS.

root@pve:~# lsblk
NAME        MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
sda           8:0    0   1.8T  0 disk
├─sda1        8:1    0   511M  0 part /boot/efi
├─sda2        8:2    0 488.3G  0 part /
├─sda3        8:3    0    16G  0 part [SWAP]
├─sda4        8:4    0   1.3T  0 part
│ └─vg-data 253:0    0   1.3T  0 lvm  /var/lib/vz
└─sda5        8:5    0     2M  0 part
sdb           8:16   0   1.8T  0 disk
└─sdb1        8:17   0   1.8T  0 part
sdc           8:32   0   1.8T  0 disk
sdd           8:48   0   1.8T  0 disk

Ignore the partition on the sdb. I just create it for the test. I have sdb sdc sdd three disk left unuse.

 

[Dunuin]

Easiest would be to completely remove and reinstall PVE using a ZFS striped mirror or LVM-thin ontop of a HW raid10.
You can use Vzdump/PBS to backup your VMs/LXCs and backup your /etc/pve folder so you don't need restart from zero.