> SmartOS is a "live OS", it is always booted via PXE, ISO, or USB Key and runs entirely from memory, allowing the local disks to be used entirely for hosting virtual machines without wasting disks for the root OS. Does anyone know if something like this is possible with Proxmox? I've got three servers I'm thinking of setting up as a small cluster and would like to boot them from a single image instead of manually se…
It depends on what "this" you meant, but in general the ways of netbooting an OS are many and varied. You'd have to declare what kind of root device you ultimately want, such as root on iSCSI. Personally, I feel that "smartOS does not support booting from a local block device like a normal, sane operating system" might be a drawback and is a peculiar thing to brag about.
In the case of smartOS (which I've never used) it would seem like that is achieved in the design because the USB isn't changing. Reboot and you are back to a clean slate.
Isn't this how game arcades boot machines? They all netboot from a single image for the game you have selected? That is what it seems smartOS is doing but maybe I'm missing the point.