System information

Chapter 1. Introduction to IBM eServer BladeCenter technology and its advantages 5
Figure 1-3 Rear view of BladeCenter chassis
The IBM Eserver BladeCenter automatically detects all blades and modules that are
installed.
1.2.2 IBM eServer BladeCenter HS20
The IBM Eserver BladeCenter HS20 blades are high-throughput, two-way SMP-capable
Xeon-based blade servers, highly scalable by adding memory and a second processor. Two
Intel Xeon connectors are standard on the blade board to support installation of a second
processor. High-speed, PC2100 DDR SDRAM is synchronized for up to 400 MHz
processor-to-memory subsystem performance with current processors. There are four
memory DIMM connectors; due to two-way interleaving, installation of memory options in
pairs is required. Current memory options available are 256 MB, 512 MB and 1 GB size
DIMMs, which support a minimum of 512 MB and a maximum of 4 GB of system memory. In
the future, IBM will release a 2 GB memory option which will see the maximum system
memory double from 4 GB to 8 GB.
Figure 1-4 on page 6 shows the BladeCenter HS20 with its top cover removed.