Supported DIMMs
The BladeCenter JS22 Type 7998 blade server contains four angled memory
connectors for industry-standard registered dual inline memory modules
(RDIMMs). The total memory capacity ranges from a minimum of 2 GB to a
maximum of 32 GB.
See Chapter 3, “Parts listing, Type 7998,” on page 235 for memory modules that
you can order from IBM.
Memory module rules:
v
Install DIMMs in pairs in connectors DIMM 1 and DIMM 2, or in connectors
DIMM 3 and DIMM 4. See “System-board connectors” on page 9 for DIMM
connector locations.
v
Both DIMMs in a pair must be the same size, speed, type, technology, and
physical design. You can mix compatible DIMMs from different manufacturers.
v
The second pair of DIMMs can be a different size and speed than the first pair,
but must follow the preceding rule, which applies to each pair.
v
Install only supported DIMMs, as described on the ServerProven
®
Web site. See
http://www.ibm.com/servers/eserver/serverproven/compat/us/.
v
Installing or removing DIMMs changes the configuration of the blade server.
After you install or remove a DIMM, the blade server is automatically
reconfigured, and the new configuration information is stored.
Blade server control panel buttons and LEDs
Blade server control panel buttons and LEDs provide operational controls and
status indicators.
Note:
Figure 1 shows the control-panel door in the closed (normal) position. To
access the power-control button, you must open the control-panel door.
MT
Keyboard/video select button
Media-tray select button
Information LED
Blade-error LED
Power-control button
NMI reset
Activity LED
Location LED
Power-on LED
Sleep (not used on
blade server)
Figure 1. Blade server control panel buttons and LEDs
4
JS22 Type 7998: Problem Determination and Service Guide
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