Reference
Context
Look-up facts: current versions, release history, subscription pricing, system requirements, network ports, repository definitions, the storage capability matrix, and hard limits.
Current Versions (September 2026)
| Product |
Version |
Released |
Base |
| Proxmox VE |
9.2 (x86-64) |
2026-05-21 |
Debian 13.5 Trixie, kernel 7.0, QEMU 11.0, LXC 7.0, ZFS 2.4 |
| Proxmox VE |
9.2 (arm64) |
2026-08-05 |
Same userspace; ARMv8-A min, ARMv9 recommended |
| Proxmox Backup Server |
4.2 |
2026-04-29 |
Dedup chunk store, S3 datastores (4.0+) |
| Proxmox Datacenter Manager |
1.0 |
2025-12-04 |
Multi-cluster rollup management |
| Ceph (integrated) |
Squid 19.2.3 / Tentacle 20.2.1 |
with PVE 9.2 |
Tentacle available as stable option |
Release History (recent majors)
| Release |
Date |
Notable |
| PVE 9.0 |
2025-08-05 |
Debian 13 base; snapshots-as-volume-chain tech preview; mobile UI |
| PVE 9.1 |
2025-11-19 |
Ceph Squid 19.2.3; mobile UI improvements; 8.4 seamless upgrade |
| PVE 9.2 |
2026-05-21 |
CRS dynamic load balancing; SDN fabrics (WireGuard/BGP); custom CPU models in GUI; disarm-ha/arm-ha; kernel 7.0 default; Ceph Tentacle option |
| PVE 9.2 arm64 |
2026-08-05 |
First arm64 release of the 9.x line |
Subscription Pricing (per occupied CPU socket / year, net EUR)
| Tier |
Price |
Support |
| Premium |
EUR 1,100 |
Unlimited tickets, 2h Sev-1 response, 24/7 (from Oct 19, 2026) |
| Standard |
EUR 550 |
10 tickets/yr, 4h Sev-1 response, 24/7 (by end of 2026) |
| Basic |
EUR 370 |
3 tickets/yr, 1 business-day response |
| Community |
EUR 120 |
Enterprise repo access, no ticket support (forum only) |
| No-subscription repo |
free |
Community-maintained access to the same packages, not recommended for production |
Rules: subscription covers every occupied socket (core count irrelevant); every cluster node must be covered; all nodes in a cluster must use the same level. All PVE features exist at every level — tiers differ only in support and repo access. PDM is included with subscriptions. ARM64 support is sold via sales contact. Enterprise support business-hours coverage: CET/CEST Mon-Fri 07:00-17:00 (Austrian business days), with NA/APAC regional hours from Oct 19, 2026.
System Requirements
|
Evaluation (min) |
Recommended production |
| CPU |
64-bit x86 (Intel 64/AMD64) or arm64 (ARMv8-A); VT-x/AMD-V for KVM |
Same; ARMv9-A on arm64 |
| RAM |
1 GB + guest RAM |
2 GB for OS/services + guests; ~1 GB per TB used storage for ZFS/Ceph |
| Disk |
(installer-dependent) |
Fast storage; ZFS prefers direct-attached disks, plenty of RAM |
| Network |
1 NIC |
Dedicated NIC for corosync; second physical link for redundancy |
| Passthrough |
— |
IOMMU: Intel VT-d / AMD-Vi (SMMU on arm64) |
arm64 caveats: AMD SEV and Intel GVT-g are x86-only; no OS-level microcode package; live migration only between same-architecture nodes. Benchmark a node with pveperf (CPU + fsync throughput).
Network Ports
| Port |
Protocol |
Service |
| 8006 |
TCP |
Web UI + REST API (pveproxy) |
| 22 |
TCP |
SSH (node joins, cluster ops) |
| 5405-5412 |
UDP |
corosync cluster communication |
| 5900-5999+ |
TCP |
VNC consoles (per guest offset) |
| 3128 |
TCP |
SPICE proxy |
| 60000-60050 |
TCP |
Live migration (qemu migration traffic) |
| Repo |
URI |
Component |
Access |
| Enterprise (recommended for subscribers) |
https://enterprise.proxmox.com/debian/pve |
pve-enterprise |
Subscription key required; stable, tested updates |
| No-subscription |
http://download.proxmox.com/debian/pve |
pve-no-subscription |
Free; same packages, wider testing risk |
| Ceph enterprise |
https://enterprise.proxmox.com/debian/ceph-<codename> |
enterprise |
Subscription |
| Ceph no-subscription |
http://download.proxmox.com/debian/ceph-<codename> |
no-subscription |
Free |
Suites: trixie for PVE 9.x. Legacy single-line sources.list entries still work; new installs use /etc/apt/sources.list.d/*.sources.
Storage Type Matrix
| Type |
Plugin |
Shared |
Snapshots |
Notes |
| ZFS (local) |
zfspool |
no |
yes |
zvols; PVE replication source/destination |
| Directory |
dir |
no |
yes (qcow2 / volume chain) |
any filesystem |
| BTRFS |
btrfs |
no |
yes |
tech preview |
| NFS / CIFS |
nfs/cifs |
yes |
yes (qcow2 / volume chain) |
file-based snapshots can block large VMs |
| LVM |
lvm |
no (unless on shared LUN) |
via volume chain (9+) |
thick |
| LVM-thin |
lvmthin |
no |
yes |
thin provisioning |
| iSCSI (kernel/libiscsi) |
iscsi/iscsidirect |
yes |
via LUN/volume chain |
multipath recommended |
| FC / SAS |
native |
yes |
via volume chain |
no dedicated plugin needed |
| Ceph RBD |
rbd |
yes |
yes |
hyperconverged or external (monhost list) |
| CephFS |
cephfs |
yes |
yes |
file storage on Ceph |
| ZFS over iSCSI |
zfs |
yes |
yes |
remote ZFS appliance |
| Proxmox Backup |
pbs |
yes |
n/a (backup target) |
dedup, encryption, live restore |
Storage Config Examples (/etc/pve/storage.cfg)
zfspool: vmdata
pool tank/vmdata
content rootdir,images
sparse
rbd: ceph-external
monhost 10.1.1.20 10.1.1.21 10.1.1.22
pool ceph-external
content images
username pve-rbd
Backup Modes (vzdump)
| Mode |
Downtime |
Consistency |
Use |
stop |
full |
highest |
small guests, maintenance windows |
suspend |
brief (very old) |
good |
legacy fallback |
snapshot |
none |
crash-consistent (fsfrozen on some FS) |
default for modern setups; PBS adds fleecing |
Limits and Gotchas
- pmxcfs config database: 128 MiB RAM-cached cap (thousands of VM configs fine).
- corosync: up to 8 links; a single bond-backed link can mask partitions — use physically separate links.
- Live migration: same CPU vendor recommended, same architecture required (x86 <-> arm64 impossible).
- Choice cardinality for storage content types is per-storage (
content images,rootdir,...); misconfigured content types are the #1 "cannot allocate disk" cause.
pvecm expected N overrides quorum — break-glass only.- Cluster-wide: all nodes should run the same PVE version for HA; mixed versions tolerated only during rolling upgrades.
Sources