System Overview; About The Sun Enterprise 250 Server - Sun Microsystems Enterprise 250 Owner's Manual

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CHAPTER

System Overview

This chapter introduces you to the Sun Enterprise 250 server and explains some of its
features. Information covered in this chapter includes:
4 "About the Sun Enterprise 250 Server" on page 1
4 "Locating Front Panel Features" on page 3
4 "Locating Rear Panel Features" on page 5
4 "About the Status and Control Panel" on page 6

About the Sun Enterprise 250 Server

The Sun Enterprise 250 server is a high-performance, shared memory,
symmetric-multiprocessing server system. It is designed around Sun's high-speed
Ultra Port Architecture (UPA) cross-bar system interconnect and Sun's
TM
UltraSPARC II processors to deliver outstanding overall system performance.
The system is housed in a roll-around tower enclosure, which measures 20.4 inches
high, 10.3 inches wide, and 27.1 inches deep (51.7 cm x 26.2 cm x 68.8 cm). The
system has a maximum weight of 118 lb (53 kg).
Processing power is provided by up to two modular UltraSPARC II CPUs, each of
which comes with 1 Mbyte or 2 Mbytes of local high-speed external cache memory.
The system UPA's clock rate synchronizes automatically to the clock rate of the
installed CPUs, and the UPA bus operates at a clock rate that is one third or one
fourth that of the CPU modules. For more information about CPU modules, see
"About CPU Modules" on page 78.
System main memory is provided by up to sixteen memory DIMM modules, each of
which is capable of storing 32, 64, or 128 Mbytes of data. Total main memory is
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