Themis RES-12DCX, Руководство по установке

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Installation and Operation
Installation Procedures
2-3
Themis Computer
2.1.2 Memory Modules
The RES-12DCX supports up to eight registered ECC DDR2 Fully-buffered DIMM
(FBD) SDRAM Memory Modules, at data rates of either 667 or 533 million data
transfers per second, (see
Table 2-1 ), up to a total memory capacity of 32 GB (see
Figure 2-2 on page 2-4).
The dual-channel memory bus can support full-duplex memory bandwidth transfers
of up to 3.2 GB/s. When installing memory, follow these rules:
• Two modules must be installed at a time, starting with DIMM 1A and 1B
(Bank 1), then 2A and 2B (Bank 2), 3A and 3B (Bank 3), and finally 4A and
4B (Bank 4); see
Table 2-2 and Figure 2-2 on page 2-4.
• It is strongly recommended that you do not mix memory modules of different
speeds and sizes. If DIMMs of different speeds have been installed, verify that
the BIOS setup is configured for the fastest speed of RAM used.
• Make sure that the correct type of SDRAM is being used (see Table 2-1 ).
Other types of SDRAM are not supported.
Table 2-1. RES-12DCX Memory Modules
RES-12DCX
Memory
FBD Standard Capacity Speed
Peak
Transfer
Rate
z Eight 240-pin DIMM Sockets
DDR2-667 PC2-5300 32 GB 2.67 GB/s 5.333 GB/s
DDR2-533 PC2-4200 32 GB 2.1 GB/s 4.266 GB/s
Caution: Exercise extreme caution when installing or removing FBD Memory
Modules to prevent any possible damage. Note that memory is interleaved to im-
prove performance.
Table 2-2. Optimized DIMM Configurations
Number
of DIMMs
Branch 0 Branch 1
Bank 1 (Channel 0) Bank 2 (Channel 1) Bank 3 (Channel 2) Bank 4 (Channel 3)
2 1A 2A
4 1A 2A 3A 4A
8 1A 1B 2A 2B 3A 3B 4A 4B