migrate VM / CPU compatibility
- Thread starter spleenftw
- Start date
Linux is very forgiving about CPU change, you should be fine.
Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
While agreeing with bbgeek17, that most Linux VM's should be mostly forgiving to HW changes, I personally try to use on my VMs a
Processors Type of x86-64-v2-AES when possible. This is usually good for any host HW changes & migration to other servers. YMMV.
We should differentiate between "backup/restore" and "live migration"
- backup/restore should work with any CPU, including "host", at least for most OS ;-)
- but live-migration (not asked for by @spleenftw) really needs the same CPU type as it copies register contents inside the CPU as part of the current "state". For this x86-64-v2-AES is simply a common (low) denominator
I differentiate those two, that's why i didn't talked about live migration but simply migration (from one host to another, not in a cluster).
But i know that for a live migration it really needs the same CPU type !
Many thanks to everyone for your answers, i wish you all a great day
Generally, if you're moving VMs between hosts with similar hardware specs, you should be good to go with a backup and restore. Just make sure your new host's CPU supports all the features your VMs need.