Specifications

44 Implementing IBM System Networking 10Gb Ethernet Switches
򐂰 Two module bays for Advanced Management Modules: The management modules
provide advanced systems management and KVM capabilities for not only the chassis
itself, but for all of the blades and other modules installed in the chassis.
򐂰 Four bays for Fan Modules: All four hot-swap/redundant fan modules come standard with
the chassis. These modules replace the need for each blade to contain its own fans. The
high availability modules are more energy efficient than dozens or hundreds of smaller
fans would be, and there are fewer points of potential failure.
򐂰 Four bays for Power Modules: IBM BladeCenter HT ships with two high-efficiency
hot-swap/redundant DC or AC (model-specific) power modules (upgradeable to four),
capable of handling the power needs of up to six blade servers.
򐂰 Two hot-swappable Media Trays: Each contain two external USB 2.0 ports, a light path
diagnostic panel, and support a 1 Gb/4 Gb compact flash (CF) option: The media tray is
shared by all the blades in the server. This setup reduces unnecessary parts (and reduces
the number of parts that can fail). If there is a failure of the Media Tray, the tray can be
swapped for another tray. While the tray is offline, the servers in the chassis can remotely
access the Media Tray in another chassis. The light path diagnostic panel contains LEDs
that indicate chassis status. One media tray comes standard (without compact flash); an
optional second one provides redundancy. The CF option can act as a boot device,
eliminating the need for HDDs in the blades.
򐂰 Redundant midplane connections: Each chassis contains a midplane that connects all
blades and modules together internally. The midplane provides two physical connections
to each blade; therefore, a failure of one connector alone cannot bring down the server.
Figure 1-23 IBM BladeCenter HT chassis module locations
Note: Two additional power modules are required when more than six blades or
high-speed switches are installed.
I/O Bay 1
I/O Bay 4
12 Blade Servers
High Speed I/O Bays 7/8
High Speed I/O Bays 9/10
Power Module 2 Power Module 4
I/O Bay 3
I/O Bay 2
Redundant MM
Media Tray 2
Advanced MM
Media Tray 1
Power Module 1 Power Module 3