This is probably one of the important sought-after reasons to go for a shared storage system. Live migration is when a virtual machine can be moved to a different node without shutting it down first. Offline migration is when the virtual machine is powered off prior to migration. The hardware and operating systems of Proxmox nodes need updates, patches, and replacements occasionally. Some updates require an immediate reboot while some require none at all. The primary function of Proxmox nodes in a cluster is to run virtual machines. When a node needs to be rebooted, all the running VMs must be stopped or migrated to other nodes. Then, migrate them back to the original node after the reboot cycle is complete. ...
Live migration of a virtual machine
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