Chapter 2 – Hardware Installation
25
The RAID system controller board already implement a 512Mb memory for
the propose of Parity bit to support the ECC feature. There is no need to install
the SODIMM with parity.
Architecture of supported SODIMM:
SDRAM Architecture
512 MB
16 (32M x 8)
256 MB
16 (16M x 8), 8 (32M x 8)
or
8 (16M x 16)
128 MB
16 (8M x 8), 8 (16M x8), 8 (8M x16)
or
4 (16M x 16)
64 MB
8 (8M x 8), 8 (4M x 16)
or
4 (8M x 16)
32 MB
4 (4M x 16)
RAID SYSTEM is normally supplied with 64MB (PA-08P/SA-08P) and 128MB (SA-16P/
PA-16P) DRAM installed.
There's no set formula to determine how much cache memory to use, but as a
general rule, a workstation, with mostly very large files, such as for audio or
video editing and playback, graphics or CAD files, can benefit from a large
cache. File servers, with multiple random access of varying file size, generally
have little or no performance improvement with additional cache.
