IBM BladeCenter HS22 Type 7870 Installation And User Manual page 18

v I/O expansion
v Large system-memory capacity
v Light path diagnostics
v PCI Express
v Power throttling
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BladeCenter HS22 Type 7870: Installation and User's Guide
100 Mbps, or 1000 Mbps network through an Ethernet-compatible switch
module in the BladeCenter unit. The controller also supports Wake on LAN
technology.
The blade server has connectors on the system board for optional expansion
cards for adding more network communication capabilities to the blade server.
The blade server system board supports up to 96 GB of system memory. The
memory controller provides support for up to twelve industry-standard
registered ECC DDR3 on Very Low Profile (VLP) form factor DIMMs installed
on the system board. For the most current list of supported DIMMs, see the
®
ServerProven list at http://www.ibm.com/servers/eserver/serverproven/
compat/us/.
Light path diagnostics provides light-emitting diodes (LEDs) to help you
diagnose problems. For more information, see the Problem Determination and
Service Guide.
PCI Express is a serial interface that is used for chip-to-chip interconnect and
expansion adapter interconnect. With the blade expansion connector you can
add optional I/O and storage devices.
Each blade server is powered by two Enterprise Voltage Regulator-Down
(EVRD) 11.0 voltage regulators. By enforcing a power policy known as
power-domain oversubscription, the BladeCenter unit can share the power load
between two power modules to ensure sufficient power for each device in the
BladeCenter unit. This policy is enforced when the initial power is applied to the
BladeCenter unit or when a blade server is inserted into the BladeCenter unit.
The following settings for this policy are available:
– Redundant without performance impact
– Redundant with performance impact
– Nonredundant
You can configure and monitor the power environment by using the Advanced
Management Module. For more information about configuring and using power
throttling, see the Advanced-Management-Module documentation or
http://www.ibm.com/systems/support/.
®