Step 2: System Requirements for cPanel & WHM 11.40 Installation

How to choose a server

When you choose a server, you should consider these factors:

  • How many sites you plan to host. For example, if your server will host many websites, each with its own set of email addresses and databases, the server will require more processing power, disk space, and RAM.
  • What kind of web hosting you plan to do. While cPanel & WHM will run on the minimum requirements below, the server will need more processing power, disk space, and RAM if you plan to host videos, music, or high-volume applications like forums.

We offer support for new installations on the operating systems and architectures mentioned below. (Please also read our Important facts to understand before installing document.)

note Note: A 64-bit operating system will use more memory than a 32-bit system. This should be considered when you choose a server.

Hardware requirements

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

note Note: The above requirements are the minimum requirements. A server that meets only these requirements may not function properly. This may especially take place if the server runs various demanding functions. Some known issues are unsuccessful mail deliveries and websites not serving when called.

Compatible software

Supported Virtual Environments [1]
Microsoft Server® 2008 Hyper-V [2]
OpenVZ (stable releases only) [3]
Oracle VM VirtualBox, VirtualBox OSE
Virtuozzo™ [3]
VMware® Server, VMware® ESX Server
Xen, XenEnterprise™, XenExpress™, XenServer™

Supported Operating Systems
(i386 and x86-64 only)
CentOS versions 5.x and 6.x
Red Hat® Enterprise Linux® versions 5.x and 6.x
CloudLinux 5.x [3]

Virtual Environments Detected and Reported as Functional
SmartOS [4]

[1] cPanel does not support 32-bit Virtual Environments that run on a 64-bit host kernel.
[2] cPanel supports the drivers and configurations provided by Microsoft.
[3] CloudLinux is not compatible with OpenVZ or Virtuozzo. cPanel does not support using Xen PV (paravirtualization) with CloudLinux.
[4] For SmartOS to be detected, you must use cPanel & WHM version 11.36.1 or higher.

If you have questions, please contact our sales team.

How long will cPanel & WHM support my operating system?

Read our Operating System End of Life Policy for details.

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

The 11.30 release of cPanel & WHM officially introduced the Long-Term Support initiative. To learn more, read our Long-Term Support document.

cPanel & WHM Version Approximate Release Date Anticipated End of Life*
11.32 (EOL) February 20, 2012 August 20, 2013
11.34 October 15, 2012 October 2013
11.36 January 25, 2013 January 2014
11.38 April 2013 April 2014
11.40 October 2013 October 2014

* cPanel & WHM releases which have reached End of Life:

  • Are unavailable for installation
  • Will no longer receive fixes or patches from cPanel, Inc.

Topic revision: r40 - 28 Oct 2013 - 18:50:08 - Main.JenniferDoubrava