Comparing Server Virtualization Software :

    • Many companies choose an open-source virtualization solution to simplify their IT infrastructure with server virtualization and consolidation. It helps them quickly reduce operating costs as well as maintenance and administration time. The open-source platform Proxmox VE comes with zero license cost, provides full access to all functionalities, and increases the flexibility, security, and reliability of your IT infrastructure.

Comparing Proxmox VE to alternatives :

    • Proxmox VE is already the best choice for thousands of satisfied customers  when it comes to choosing an alternative to VMware vSphere, Microsoft Hyper-V or Citrix XenServer. The following list will help you to compare Proxmox VE with alternatives in the server virtualization market.

Overview :

Base OS:                                               Debian GNU/Linux
License:                                                GNU Affero GPL, v3
Full virtualization:                               KVM/QEMU
OS-level virtualization:                       Linux Container (LXC)
Architecture:                                        x86_64
Installation:                                          Bare-metal ISO installer
max. RAM and CPU per host:           128 TiB [64 PiB] RAM, 8192 logical CPUs, 8 sockets

Key Features :

100% software-based:                                     yes
Clustering:                                                         yes, any node in Proxmox VE can manage the cluster (no master node)
High Availability (HA):                                      yes

Storage:                                                             LVM, LVM-thin, iSCSI/kernel, iSCSI/libiscsi, Ceph/RBD, ZFS over iSCSI, ZFS (local), directory, NFS, CIFS, GlusterFS, Proxmox Backup Server

Virtual networking:                                          Bridged-Networking, Open vSwitch
Guests:                                                                Linux, Windows, other operating systems are known to work
Memory deduplication/sharing:                    yes, KSM
Firewall:                                                              built-in, cluster-wide, IPv4 and IPv6
Cloud-ready:                                                      yes
Hyper-Converged Infrastructure (HCI):         yes

Management :

GUI:                                               full-featured, web-based user interface

CLI:                                                yes

API:                                                yes (REST)

Monitoring:                                  yes (InfluxDB, Graphite), plugins for external monitoring solutions

User Management:                     LDAP, AD, two-factor authentication for GUI

Permission Management:         yes, granular

3rd party tools:                            yes

VM Lifecycle :

Backup/Restore:                     yes, integrated (vzdump) & Proxmox Backup Server
Live Restore:                            yes (virtual machines with Proxmox Backup Server)
Migration:                                yes
Live Migration:                        yes, interchangeable CPU *configure oldest CPU type
Storage Live Migration:         yes
Snapshot:                                 yes
Template and Clone:              yes
Replication:                              yes
Export / Import:                      yes
Virtual CPU Overcommit:      yes
V2V:                                           yes
P2V:                                           yes

Support and Pricing :

Free software license:                          yes, AGPL,v3
License cost:                                          no
Enterprise support:                              commercial, subscription-based
Forum support:                                     public community forum with free access
Training courses:                                  yes
Mailing lists:                                           yes, for discussion, support, feature requests
Bugtracker:                                            yes
Code repository:                                   public (Git)
Self-learning paths:                              documentation, project page, videos, books, etc. 

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