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The Datacenter edition represents the top end of the Windows Server 2008 product range and is targeted at mission critical enterprises requiring stability and high uptime levels. Windows Server 2008 Datacenter edition is tied closely to the underlying hardware through the implementation of custom Hardware Abstraction Layers (HAL). As such, it is currently only possible to obtain Datacenter edition as part of a hardware purchase.
As with other versions, the Datacenter edition is available in 32-bit and 64-bit versions and supports 64Gb 64GB of RAM on 32-bit systems and up to 2TB of RAM on 64-bit systems. In addition, this edition supports a minimum of 8 processors up to a maximum of 64.
Upgrade paths to Windows Server 2008 Datacenter Edition are available from the Datacenter editions of Windows 2000 and 2003.
== Windows Web Server 2008 ==
Windows Web Server 2008 is essentially a version of Windows Server 2008 designed primarily for the purpose of providing web services. It includes Internet Information Services (IIS) 7.0 along with associated services such as Simple Mail Transfer Protocol (SMTP) and Telnet. It is available in 32-bit and 64-bit versions and supports up to 4 processors. RAM is limited to 4Gb 4GB and 32Gb 32GB on 32-bit and 64-bit systems respectively.
Windows Web Server 2008 lacks many of the features present in other editions such as clustering, BitLocker drive encryption, multipath I/O, Windows Internet Naming Service (WINS), Removable Storage Management and SAN Management.
<td style="border-color: #cccccc">Processor</td>
<td style="border-color: #cccccc">• Minimum: 1GHz (x86 processor) or 1.4GHz (x64 processor)<br /> • Recommended: 2GHz or faster<br />
<strong>Note:</strong>For Itanium based systems an Intel Itanium 2 processor is required.</td>
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<td style="border-color: #cccccc">Display and Peripherals</td>
<td style="border-color: #cccccc">• Super VGA or greatregreater-resolution monitor (800x600)<br /> • Keyboard<br /> • Microsoft Mouse or compatible pointing device</td>
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As with the specified system requirements for all Windows systems it is best to aim for the ''Recommended'' values rather than the ''Minimum'' values to ensure acceptable levels of performance. For example, whilst it is possible to run Windows Server 2008 in 512Mb of RAM it is unlikely that performance levels will be optimal with such a configuration.