Curious if yo made any progress? I have the same issue. I'm kind of a nub to proxmox and I haven't found any good example of how to do this with mkqdisk, etc. ? Anything you could share would be great.
I thought I would post the quorum disk config that we are using. Essentially, we share a small 10MB iSCSI volume from one of our backup servers as the quorum disk. The following URLs were used for reference: