Installation guide

IBM Eserver xSeries 366 Technical Introduction 25

Table 4 x366 operating system support

Notes for Table 4:

1. Although operating systems may support eight-way or larger systems, scalability is a

function of both the operating system and the application/workload. Applications must be

specifically designed to take advantage of larger SMP systems.

2. Some operating systems are supported at general availability (GA); these are marked with

Yes. Those operating systems marked with Planned are planned to be supported after GA.

For the latest operating system support information, go to:

http://www.pc.ibm.com/us/compat/nos/matrix.shtml

3. Virtual machines running on VMware ESX Server 2.5 will only be dual processor capable

if the VMware ESX Virtual SMP module is also purchased.

“Processors” on page 5 also describes the EM64T extension technology; Table 5 lists the

levels of support each OS provides for the EM64T technology.

Table 5 Operation system support for EM64T modes

Operating system

Release Available Hyper-Threading

Windows 2000 Server SP4 Yes Yes

Windows 2000 Advanced Server SP4 Yes Yes

Windows Server 2003, Standard Edition Initial Yes Optimized

Windows Server 2003, Enterprise Edition Initial Yes Optimized

Windows Server 2003, Standard x64 Edition SP1 Yes Optimized

Windows Server 2003, Enterprise x64 Edition SP1 Yes Optimized

NetWare 6.5 Yes Optimized

Red Hat Enterprise Linux AS for x86 3 Update 2 Yes Optimized

Red Hat Enterprise Linux AS for AMD64/EM64T 3 Update 2 Yes Optimized

SUSE LINUX Enterprise Server for x86 9 Yes Optimized

SUSE LINUX Enterprise Server for AMD64/EM64T 9 Yes Optimized

VMware ESX Server 2.5.1 Yes

Ye s

Operating system 32-bit legacy mode Compatibility mode 64-bit mode

Windows 2000 Server Supported No No

Windows 2000 Advanced Server Supported No No

Windows Server 2003, Standard Edition Supported No No

Windows Server 2003, Enterprise Edition Supported No No

Windows Server 2003 Standard x64 Edition No Supported Supported

Windows Server 2003 Enterprise x64 Edition No Supported Supported

NetWare Supported No No

Red Hat Enterprise Linux AS for x86 Supported No No

Red Hat Enterprise Linux AS for AMD64/Intel EM64T No Supported Supported