System Requirements

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Install the Latest Version of cPanel & WHM

System requirements for cPanel & WHM range from a minimum of 266 MHz processor, 512 MB RAM, and 10GB hard disk, to multi-processor, multi-core systems.

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We offer support for new installations on the operating systems and architectures mentioned below.

Hardware Requirements

Component Minimum Requirement
Processor 266 MHz processor
Memory 512 MB RAM (1 GB recommended when hosting many accounts)
Disk Space 10GB hard disk

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 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.
  4. For SmartOS to be detected, you must use cPanel & WHM version 11.36.1 or higher.

Important Facts

Please keep these facts in mind when you install cPanel & WHM:

  • 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.
  • We strongly recommend using CentOS or Red Hat® Enterprise Linux® if you are not an experienced FreeBSD administrator.
  • You should install a minimal version of the operating system.  All services that cPanel requires will automatically be installed during the cPanel & WHM installation process.  Installing services prior to the installation of cPanel & WHM will cause compatibility problems.
  • Because cPanel 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 NAT.

Installation Instructions

To install cPanel & WHM 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 in the background.
  3. For more details, read our documentation on Installing cPanel and WHM. If you have questions, please contact our sales team.

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

The 11.32 release of cPanel & WHM officially introduces the Long-Term Support initiative. To learn more, read our Long-Term Support document.

cPanel & WHM Version Approximate Release Date Anticipated End of Life*
11.36 Jan. 25, 2013 Jan. 2014
11.34 Oct. 15, 2012 Oct. 2013
11.32 Feb 20, 2012 Aug 20, 2013
11.30 July 13, 2011 Jan 13, 2013

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

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