1. README first

Before you start to install the Operating System onto the system, make sure you have

• downloaded the latest Tools & Driver CD/DVD. When you openend the link, go to letter 'S' and look for Sun Fire X.... and then for the latest CD/DVD Version.
  For instance for X4140 you gonna see this:

Sun Fire X4140 Server
Sun Fire X4140/X4240/X4440 Software 2.1.1
Sun Fire X4150 Tools and Drivers CD 2.0
Sun Fire X4150 Tools and Drivers DVD 2.2.0

Choose the latest DVD version 2.2.0.
Install the firmware and drivers onto your system.

• Download also, if avaiable, the Software CD. In this case download - Sun Fire X4140/X4240/X4440 Software 2.1.1.
  Sun Fire X4140/X4240/X4440 Software 2.1.1 offers support for AMD Opteron Dual-Core and Quad-Core processors on newer versions of operating systems including Windows 2008. It also includes new tools and drivers, and the Sun Installation Assistant.

• Apropos Sun Installation Assistant( SIA ). Consider to make use of it. SIA helps you to install Linux and Windows onto your system. NEW: Windows 2008 is supported.

The documentation offers instructions using SIA
-to install an OS,
-to upgrade system firmware,
-to recover a service processor,
-to install via PXE boot, and
-on a USB Flash Drive
-and so on, and so on.

There is also a very good BigAdmin Article how to use SIA.
You can get SIA here.

• And finally, take a look on the Sun Download pageand check if you do need some more software to integrate your system in your existing IT infrastructure.

Sun Servers Integration 1.0 for HP OpenView Operations for UNIX 1.0
Sun Servers Integration 1.0 for HP OpenView Operations for Windows
Sun Servers Integration 1.0 for IBM Director 1.0
Sun Servers Integration 1.0 for IBM Tivoli Monitoring V6.1
Sun Servers Integration 1.0 for IBM Tivoli Netcool/OMNIbus 1.0
Sun Servers Integration 1.0.1 for Microsoft System Center Operations Manager
Sun Servers Integration 1.1 for HP OpenView Operations for UNIX
Sun Servers Integration 2.0 for BMC PATROL Enterprise Manager
Sun Servers Integration 2.0 for Microsoft System Center Operations Manager 2007
Sun Servers Integration 2.1 for CA Unicenter Network & Systems Management
Sun Servers Integration 3.1 for Microsoft Operations
Sun Servers Integration 3.3 for Microsoft Operations Manager 2005 3.3

Now, go back and choose your system and get installations informations.

Good luck!