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Adaptec RAID Installation Guide
Cache Memory Module
Adaptec cache memory modules provide up to 256 MB of high-
speed SDRAM disk cache with ECC (Error Correction Coding).
Note:
You must have at least 32 MB of cache installed. The
on-board processor uses 16 MB of the available memory.
Therefore, the RAID software shows 16 MB less than is
actually installed.
When ECC memory is installed, the green ECC Enabled (ECCEN)
LED is lit. (Non-ECC memory could work in your controller, but is
not recommended.) Refer to
Appendix A
for the location of the LED.
You can use non-Adaptec memory from qualified third-party
vendors. Visit
www.adaptec.com
for a list of memory types and
manufacturers that have been approved by Adaptec. Requirements
for non-Adaptec memory are described in the following table:
Controller
Sockets
Available
Capacities (MB)
Type
Adaptec 2400A
1
32 (as shipped),
64, or 128
3.3-V, 100-MHz (or faster)
PC100-compliant, 168-pin
ECC DIMM (Dual
In-line Memory Module).
Adaptec 2100S
1
Adaptec 3210S
1
32, 64, 128, or
256
Adaptec 3410S
1
64 (as shipped),
128, or 256
Adaptec 3200S/
3400S
2
1
1
During normal operation, Socket 1 (designator J1) must always contain a memory
module. Refer to
Appendix A, Card and Module Diagrams
to verify the location of
Socket 1. When two sockets are in use, the modules must match each other in type and
capacity.
32 (as shipped),
64, or 128
100-MHz SDRAM,
144-pin SODIMM.
AMM-232 (32 MB) or
AMM-264 (64 MB).
Combined RAID IG.book Page 12 Thursday, May 3, 2001 11:51 PM
Summary of Contents for ASR-2000S
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