System Requirements

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Install the Latest Version of cPanel® & WHM® Software

System requirements for cPanel & WHM software range from a 266 MHz processor, 512 MB of RAM, and a 20GB hard disk to multi-processor, multi-core systems.



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We offer support for new installations on these operating systems and architectures.

Hardware Requirements

Component Minimum Requirement
Processor 266 MHz processor
Memory 512 MB RAM (1 GB recommended when hosting many accounts)
Disk Space 20GB hard disk (40GB is recommended)

Compatible Software

Supported Virtual Environments [1.]
KVM
Linux-VServer
Microsoft Server® 2008 Hyper-V [2.]
OpenVZ (STABLE releases only)
Oracle VM VirtualBox, VirtualBox OSE
Virtuozzo™
VMware® Server, VMware® ESX Server
Xen, XenEnterprise™, XenExpress™, XenServer™
Supported Operating Systems
(i386 and x86-64 ONLY)
CentOS versions 5.x, 6.x
Red Hat® Enterprise Linux® versions 5.x, 6.x
CloudLinux 5.x, 6.x [3.]
Virtual Environments Detected and Reported as Functional
SmartOS[4.]
  1. cPanel software does not support 32-bit Virtual Environments that run on a 64-bit host kernel.
  2. cPanel software supports the drivers and configurations provided by Microsoft.
  3. CloudLinux is not compatible with OpenVZ or Virtuozzo.
  4. For SmartOS to be detected, you must use cPanel & WHM software version 11.36.1 or higher.

Important Facts

Please keep the following facts in mind when you install cPanel® & WHM® software:

  • We strongly recommend a system that exceeds the minimum requirements. This is especially true if you plan to host a large number of domains and accounts.
  • You should install a minimal version of the operating system. All services that cPanel requires will automatically be installed during the cPanel & WHM software installation process. Installing services prior to the installation of cPanel & WHM software will cause compatibility problems.
  • Because cPanel software is designed for commercial hosting, we only license publicly visible, static IP addresses. We do not license dynamic, sticky, or internal IPs.
  • cPanel does not support one-to-many NAT.

Installation Instructions

To install cPanel® & WHM® software on CentOS:

  1. Download a free CentOS DVD ISO. To use this ISO, you must burn the image to a DVD. Then, insert the DVD into the server and turn it on.
  2. Upon its first reboot, the ISO will install cPanel and WHM software in the background.
  3. For more details, read our documentation on Installing cPanel and WHM software. If you have questions, please contact our sales team.

How long will this release of cPanel® & WHM® software receive support?

The 11.32 release of cPanel & WHM officially introduced the “Long-Term Support” initiative. To learn more, see our Long-Term Support document.

cPanel & WHM Version Approximate Release Date Anticipated End of Life*
11.44 June 2014 June 2015
11.42 Jan. 2014 Jan. 2015
11.40 Oct. 2013 Oct. 2014

*cPanel® & WHM® software releases that have reached End of Life (EOL) are unavailable for installation and will no longer receive fixes or patches from cPanel®, Inc.