Data General AViiON 4600 Series, Customer Documentation

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Adding or Replacing Memory Modules
8-2
014–002091
Each memory module mounts in a connector on the system board as shown in
Figure 8Ć2.
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Computer unit
(right side cover removed)
System board
Memory module connectors
Memory modules
Figure 8-2 Location of Memory Modules and Connectors
Rules for Installing Memory Modules
When you install memory modules, you must follow the configuration and installation
rules listed next. Note that Figure 8Ć3 shows the numbering scheme for AViiON 530
and 4600 series memory modules on the system board.
•
You must install memory modules in consecutive memory module connector pairs,
starting withthe leftmost vertical pair (connector numbers 0 and 1) and working
towards the right. Never leave a connector empty between memory modules.
•
You must configure memory modules in vertical pairs on the system board. Odd
numbers of modules will not work in AViiON 530 or 4600 series systems. For
example, a module in connector 2 on the system board requires a memory module
in connector 3; a memory module in connector 5 will not work without a
corresponding module in connector 4.
•
Eachpair requires modules of equal capacity. For example, a 16-Mbyte memory
module in connector 2 requires a 16-Mbyte module in connector 3.
• You must install all pairs of 16-Mbyte modules first (in the lower-numbered slots)
when installing a mix of 4-Mbyte and 16-Mbyte modules. For example, in a
configuration that combines two pairs of 16-Mbyte and one pair of 4-Mbyte
memory modules, the 16-Mbyte pairs must occupy connectors 0-3 on the system
board, and the 4-Mbyte modules must occupy connectors 4 and 5.