Adding I/O Ddr2 Memory Modules - IBM QS21 - BladeCenter - 0792 Service Manual

Adding I/O DDR2 memory modules

This section describes how to add extra I/O DDR2 memory. There are two slots per
Cell/B.E. companion chip allowing up to 1 GB of memory for each Cell/B.E.
companion chip for I/O buffering.
DIMM
filler
Figure 12. DIMM slot location
You must add memory as pairs of dual inline memory modules (DIMMs). You may
fit one or more memory modules for each buffer, but each I/O buffer must use the
same type of memory module and have the same amount of memory. The minimum
amount of memory you can add is 512 MB per buffer, or one module per buffer. If
you fit a single pair of DIMMs you must use slots JDIM00 and JDIM11.
The BladeCenter QS21 supports VLP DDR2 512 MB DIMMs only.
Note: The DIMMs are used as memory for the I/O buffers only. You cannot
To install extra I/O buffer memory, complete the following steps:
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BladeCenter QS21 Type 0792: Problem Determination and Service Guide
DIMM slot at JDIM01
DIMM slot at JDIM00
increase the size of system memory which is fixed at 1GB for each Cell/B.E.
processor.
1. Shut down the BladeCenter QS21.
2. Remove the BladeCenter QS21 from the BladeCenter unit.
3. Open the top cover.
4. Locate the DIMM slots in which you want to insert the I/O DDR2 memory.
modules.
DIMM filler
DIMM slot at JDIM11
DIMM slot at JDIM10