Operating instructions

Chapter 2. IBM eServer BladeCenter overview 9
The CSB5 provides the interface to:
򐂰 One PCI Bus used to connect to the ATI Rage XL video controller with 8 MB of memory
򐂰 Two Low Pin Count (LPC) Buses used to connect to the 4 MB EEPROM (holding the
POST/BIOS code) and to the SIO (SuperI/O) chip
򐂰 Two IDE channels supporting the internal storage
򐂰 Four USB Buses for redundant connections to FDD/CDROM and keyboard/video
This system uses a H8S2148 IBM Integrated System Management Processor that is wired to
the I2C buses.
Figure 2-5 HS20 architecture
2.3 Stand-alone configuration tools
BladeCenter hardware can be configured by using standard software such as a Web browser
and a Telnet client, which are available on all the mainstream OS platforms. This is possible
by exploiting Web and ANSI interfaces embedded in both the management and the Ethernet
Switch Modules. A very comprehensive tool is accessible through the Web interface: This tool
contains various configuration submenus, and one of them (Switch Tasks) lets the customers
set up the Ethernet Switch Module. Basic settings (such as the Ethernet Switch Module IP
address and the enablement of the external ports) are configured by exploiting the I2C bus.
An advanced menu allows for the fine tuning of the module, by either opening another window
of the Web browser or running a Java™ applet that allows for connectivity to an ANSI
interface (this requires Java 2 V1.4 installed on the management system). To achieve this, the
IBM BladeCenter HS20 - Architecture
CIOB-X2
PCI-X
64-bit
100 MHz
GB Ethernet
BCM5703S
CIOB-X2
Ultra320 SCSI
LSI 53C1020
ATI Rage
XL 8 MB
Xeon DP
Xeon DP
Xeon DPXeon DP
Xeon DPXeon DP
IMB2 (16-bit 800 MHz, simult-bidi, 3.2 GB/sec)
IDE Conn
Graphics
DDR-SDRAM
2 channels
Midplane
IDE Conn
SCSI Backplane
(2 hot-swap)
Optional SCSI Storage
Expansion Unit
GB Ethernet
BCM5703S
Optional
Expansion Card
(daughter card)
USB for MM1
(keyb/mouse)
USB for
FDD/CD - 1
IMB2
PCI 2.2 32-bit
USB for MM2
(keyb/mouse)
LPC
PCI-X 64-bit 100 MHz
PCI-X
64-bit
100 MHz
HDM Connector HDM Connector
SMBus
RS-485
USB for
FDD/CD - 2
CSB5CSB5
USB Switch
4 MB BIOS
ServerWorks
GC LE
CMIC
ServerWorks
GC LE
CMIC
Thin IMB
4-bit 200 MHz
simult-bidi
200 MB/sec
LPC
SIO
PC87417
H8S2148
Sys Mgmt