IBM System x3950 X6, Руководство по эксплуатации продукта

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IBM System x3950 X6 13
Memory options
IBM DDR3 memory is compatibility tested and tuned for optimal IBM System x® performance and
throughput. IBM memory specifications are integrated into the light path diagnostics for immediate system
performance feedback and optimum system uptime. From a service and support standpoint, IBM memory
automatically assumes the IBM system warranty, and IBM provides service and support worldwide.
The x3950 X6 supports DDR3 memory operating at speeds up to 1600 MHz. The server supports up to
192 DIMMs when all eight processors are installed, 24 DIMMs per processor. Each processor has four
memory channels that are implemented using Scalable Memory Interface generation 2 (SMI2) chips, and
the server implements three DIMMs per channel. The processor and the corresponding memory DIMM
slots are on the Compute Book.
The following table lists the memory options that are available for x3950 X6.
Table 5. Memory options
Part
number Feature
code Description Maximum
supported
x3950 X6 Standard
models
where used
RDIMMs
00D5024 A3QE 4GB (1x4GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC
DDR3 1600MHz LP RDIMM
192 (24 per
CPU)
-
00D5036 A3QH 8GB (1x8GB, 1Rx4, 1.35V) PC3L-12800 CL11 ECC
DDR3 1600MHz LP RDIMM
192 (24 per
CPU)
BAx, CAx, CCx
46W0672 A3QM 16GB (1x16GB, 2Rx4, 1.35V) PC3L-12800 CL11
ECC DDR3 1600MHz LP RDIMM
192 (24 per
CPU)
-
LRDIMMs
46W0676 A3SR 32GB (1x32GB, 4Rx4, 1.35V) PC3L-12800 CL11
ECC DDR3 1600MHz LP LRDIMM
192 (24 per
CPU)
-
46W0741 A451 64GB (1x64GB, 8Rx4, 1.35V) PC3-10600 DDR3
1333MHz LP LRDIMM
192 (24 per
CPU)
-
The following rules apply when selecting the memory configuration:
The server supports RDIMMs and LRDIMMs.

Mixing different types of memory (RDIMMs and LRDIMMs) is not supported.

The maximum number of ranks per one DDR3 channel is six with RDIMMs or 24 with LRDIMMs.

In RAS (lockstep) mode, DIMMs must be installed in a pair.

The maximum quantity of DIMMs that can be installed in the server depends on the number of

processors, DIMM type, rank, and operating voltage, as shown in the "Max. qty supported" row in the
following table.