Digital Equipment DEC 10000, Service Manual, Page: 17 / 70

Adding or Replacing CPUs and Memories 1-5
The LSB card cage (see Figure1-2) has nine slots. Slot numbers are
equivalent to node numbers. Four slots are at the front of the cabinet
(nodes 0 through 3, right to left), and five slots are at the rear (nodes 4
through 8, right to left).
A system can have up to six processors and up to seven memory modules,
as space allows. The maximum memory configuration is bounded by the
operating system support and the physical slots.
•
The first CPU module is installed in node 0 (in the front at the far
right).
•
Additional CPU modules are installed in slots 1 through 5.
•
The IOP module is in node 8.
•
The first memory module is in node 7.
•
Additional memory modules are installed next to filled slots. Modules
are installed contiguously to the centerplane of the card cage. Install
additional memories alternating between installation from the front
and the back of the cabinet (see the example below of a 2 processor, 4
memory system).
•
Install filler modules in all empty slots to direct the airflow through
the card cage.
Figure 1-3 Sample Configuration—2 Processors, 4 Memories
For more information:
Platform Service Manual
KN7AA CPU Technical Manual
KA7AA CPU Technical Manual
MS7AA Memory Technical Manual
Front Rear
4
5
6
7
8
0
1
2
3
BXB-0094A-92
1st CPU
2nd CPU
3rd Memory
Filler Module
IOP Module
1st Memory
2nd Memory
4th Memory
Filler Module
Centerplane