Lenovo THINKSERVER 3821 - Manual (Page 243)

Some optional devices have device drivers that you must install. For information
about installing device drivers, see the documentation that comes with each device.
The server comes with at least one microprocessor. If more than one
microprocessor is installed, the server can operate as a symmetric multiprocessing
(SMP) server. You might have to upgrade the operating system to support SMP. For
more information, see “Typical operating system installation” on page 265 and the
operating-system documentation.
If the server has an optional RAID adapter and you have installed or removed a
hard disk drive, see the documentation that comes with the RAID adapter for
information about reconfiguring the disk arrays.
For information about configuring the integrated Gigabit Ethernet controller, see
“Configuring the Gigabit Ethernet controller” on page 266.
Chapter 7. Installing optional devices and replacing customer replaceable units 235