Digital Equipment Prioris HX MP, Service Maintenance Manual, Page: 37 / 82

Digital PRIORIS HX MP Server Digital PRIORIS HX MP Server Service Procedures Service Procedures
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Computer Memory Configurations
Adding more memory allows the server to run larger, more complicated software and run it quicker. The
PRIORIS HX MP server will support up to 1 GB of standard parity memory. This memory can either be
installed entirely on one memory module or can be split between two memory modules.
Each memory module contains two sets of memory banks (banks 0 through 3). Each bank consists of four
SIMM sockets. The PRIORIS HX MP server comes with at least 32 MB of memory installed in bank 0.
When adding additional memory make sure you:
♦
Install 36-bit SIMMs having an access time of 70 ns or less.
♦
For single memory module configurations, fill one bank (four sockets) at a time using the same
SIMM size, type, and speed (8 MB, 16 MB, and 32 MB densities are available).
♦
Fill bank 0 (0H and 0L) before bank 1 (1H and 1L), bank 1 before bank 2 (2H and 2L), bank 2 before
bank 3 (3H and 3L).
NOTE
Due to height limitations, 64 MB SIMMs cannot be used on the PRIORIS HX MP
memory modules.
♦
For dual memory module configurations, fill one bank (four sockets) at a time on each module using
the same SIMM size, type, and speed (8 MB, 16 MB, and 32 MB). For optimal memory
performance, use the same SIMM number, size, type, and speed on each memory module.
The following tables list the SIMM combinations supported by the PRIORIS HX MP server.
Memory Module Configurations
BANK OH/OL BANK 1H/1L BANK2H/2L BANK3H/3L TOTAL
4 x 8MB 32MB
4 x 8MB 4 x 4MB
48MB
4 x 8MB 4 x 4MB 4 x 4MB 64MB
4 x 8MB 4 x 8MB 64MB
4 x 16MB 64MB
4 x 8MB 4 x 8MB 4 x 4MB
80MB
4 x 16MB 4 x 4MB
80MB
4 x 8MB 4 x 8MB 4 x 4MB 4 x 4MB 96MB
4 x 8MB 4 x 8MB 4 x 8MB 96MB
4 x 8MB 4 x 16MB
96MB
4 x 8MB 4 x 8MB 4 x 8MB 4 x 4MB
112MB
4 x 8MB 4 x 16MB 4 x 4MB 112MB
4 x 8MB 4 x 8MB 4 x 8MB 4 x 8MB 128MB
4 x 8MB 4 x 8MB 4 x 16MB
128MB
4 x 16MB 4 x 16MB
128MB
4 x 32MB 128MB
4 x 8MB 4 x 8MB 4 x 16MB 128MB
4 x 16MB 4 x 16MB 128MB
4 x 32MB
128MB