Comparisons anchored on Proxmox VE, the AGPL virtualization platform many teams evaluate when leaving VMware.
A single integrated virtualization stack against a modular private cloud. Weighs cluster size, self-service and multi-tenant API needs, the team it takes to run OpenStack services, and Proxmox per-socket subscriptions versus OpenStack release upgrades.
Two common VMware replacements compared: KVM plus LXC with built-in Ceph and ZFS against the Xen hypervisor managed through Xen Orchestra. Covers support terms, LTS windows, storage options and migration from vSphere.
Subscription models side by side: Proxmox per-socket tiers that differ only in support and enterprise repository access against Vates VMS plans that are flat for up to three hosts or priced per host, plus what each lets you run free, and how host and socket counts change the yearly total.
How a Proxmox VE cluster should keep virtual machine disks available across nodes: hyper-converged Ceph shared storage or local ZFS with Proxmox storage replication. Covers node and network requirements for Ceph, the replication schedule and data loss window with ZFS, how each works with Proxmox HA, and the hardware cost of each.
Running Proxmox VE on the free no-subscription repository against buying a subscription: identical features, enterprise repository access for host and Ceph packages, what each subscription level adds in support, and the per-socket and cluster-wide subscription rules.
Proxmox VE's Debian-based KVM and LXC platform against SUSE's Harvester HCI built on Kubernetes, KubeVirt and Longhorn: hardware minimums, storage, VMware import, support subscriptions and which one fits a team that already runs Kubernetes.
When to run a workload as a Proxmox LXC container or a KVM virtual machine: shared host kernel and Linux-only guests, privileged versus unprivileged containers, isolation, live migration and why Proxmox recommends nesting application containers inside a VM.
Built-in vzdump full backups to NFS or local storage against Proxmox Backup Server's deduplicated, incremental, encrypted backups: backup modes, storage growth, restore speed, a dedicated backup host and the point where the extra server pays off.
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