Multi-Tech Systems RAS96 - Manual (Page 66)

RAS96 RASCard User Guide
CommPlete Communications Server 58
Memory Upgrade
Two memory banks (Bank 1 and Bank 2) with two SIMM sockets per bank (M1 through
M4) are provided on the RASCard. The standard configuration has 16 MB of EDO
DRAM in Bank 1. The RASCard supports four 72-pin SIMMs of 4 MB, 8 MB, 16 MB, or
32 MB DRAM to form a memory size from 8 MB to 128 MB. The DRAM can be 60 ns or
70 ns, fast page mode or EDO, 32-bit non-parity or 36-bit parity. For a list of approved
SIMMs, see Appendix D.
Note: Each bank must have the same size memory installed in pairs. Always fill Bank 1
first.
Table 3. Memory Configurations.
Bank 1 Bank 2 TOTAL
None None 0 MB
2 × 4 MB None 8 MB
2 × 4 MB 2 × 4 MB 16 MB
2 × 8 MB None 16 MB
2 × 8 MB 2 × 4 MB 24 MB
2 × 8 MB 2 × 8 MB 32 MB
2 × 16 MB None 32 MB
2 × 16 MB 2 × 8 MB 48 MB
2 × 16 MB 2 × 16 MB 64 MB
2 × 32 MB None 64 MB
2 × 32 MB 2 × 16 MB 96 MB
2 × 32 MB 2 × 32 MB 128 MB
1. Turn the power off on the segment to be upgraded.
2. Remove the connectors on the back of the RASCard and loosen the screws that
hold the RASCard in place.
3. Use the ejector lever to remove the RASCard from the CommPlete rack and set the
card flat on a table.
4. The standard configuration has two 8 MB EDO DRAM SIMMs in bank 1. If you
plan to leave this memory installed and add memory to Bank 2, jump to Step 8.
5. Remove the SIMMs in Bank 1 by bending the metal tab on each side of the SIMM
socket until the SIMM falls sideways.
6. Place the new SIMMs into Bank 1 starting with the SIMM socket farthest from the
board edge. Notice that each SIMM has a notch cut out on one edge next to the
gold fingers. Place the SIMM into the SIMM socket so the notch in the SIMM is on
the side closest to the front bracket of the RASCard. The SIMM will go into the
socket at a 45 degree angle. Once the gold fingers of the SIMM are inside the pin