Hitachi 8880R manual Memory

Ch 1: Hardware

Memory

The Memory Architecture of this system is a 4 way interleave. The memory needs to be installed in sets of 4. Do not attempt to install memory sets before removing the board from the unit and properly grounding yourself, the memory expansion board, and the memory sets to avoid ESD damage.

There are two memory expansion boards per system as a standard configuration. Each memory expansion board can accommodate 2 sets of memory DIMMs, A and B. Each set has sixteen DIMMs. Thus there are total of four sets of DIMMs per standard system. The memory configuration is 4 ways interleave and requires installation of

four DIMMs at a time. Base configuration comes with 1GB (128MB x 8 pcs) of memory using 128MB of DIMMs.

The table below summarizes the memory configurations:

Total Memory: 4.0GB	Total Memory: 3.5GB	Total Memory: 3.0GB	Total Memory: 2.5GB	Total Memory: 2.0GB	Total Memory: 1.5GB	Total Memory: 1.0GB (Default Configuration)	Total Memory: 512MB	DIMM Socket Number:	DIMM Socket Sets:	Memory Expansion Board Number
X	X	X	X	X	X	X	X	1	A	1
X	X	X	X	X	X	X	X	1	B	1
X	X	X	X	X	X	X	X	1	A	2
X	X	X	X	X	X	X	X	1	B	2
X	X	X	X	X	X	X		2	A	1
X	X	X	X	X	X	X		2	B	1
X	X	X	X	X	X	X		2	A	2
X	X	X	X	X	X	X		2	B	2
X	X	X	X	X	X			3	A	1
X	X	X	X	X	X			3	B	1
X	X	X	X	X	X			3	A	2
X	X	X	X	X	X			3	B	2
X	X	X	X	X				4	A	1
X	X	X	X	X				4	B	1
X	X	X	X	X				4	A	2
X	X	X	X	X				4	B	2
X	X	X	X					5	A	1
X	X	X	X					5	B	1
X	X	X	X					5	A	2
X	X	X	X					5	B	2
X	X	X						6	A	1
X	X	X						6	B	1
X	X	X						6	A	2
X	X	X						6	B	2
X	X							7	A	1
X	X							7	B	1
X	X							7	A	2
X	X							7	B	2
X								8	A	1
X								8	B	1
X								8	A	2
X								8	B	2

Hitachi VisionBase 8880R Server 15