Installing ZFS on a node with a single NVMe and a single SATA disk (no RAID) to enable replication in a 2-node cluster — how?
Goal
I want to install Proxmox VE on a node that has a single NVMe SSD and a single SATA SSD, so with no redundancy at all, while still using ZFS.
The problem is that during the installer, ZFS is only available when using RAID, and the trick of using RAID0 with a single disk no longer works: the installer throws an error saying at least two disks must be selected. Same thing for RAID1.
Context
My Proxmox cluster consists of two nodes:
• the first node is the one described above: a single NVMe SSD and a single SATA SSD, no redundancy;
• the second node has RAID1 for both the system disk and the data disk.
I need to enable replication (pvesr) between the two nodes, but the only way to do that is to also get the first node running on a ZFS filesystem.
Question
How can I pull off this kind of installation?
[resolved! More info in the comments]