IBM System x3550 M4
11
The following memory protection technologies are supported:
ECC
z
Memory mirroring
z
Memory sparing
z
If memory mirroring is used, then DIMMs must be installed in pairs (a minimum of one pair per each CPU),
and both DIMMs in a pair must be identical in type and size. If Memory Sparing is used then DIMMs must
be installed in sets of three, and all DIMMs in the same set must be identical in type and size.
The following table lists memory options available for the x3550 M4 server.
Table 5. Memory options
Part
number
Description
Maximum
quantity
supported
Standard models
where used
UDIMMs
49Y1404
4 GB (1x 4 GB, 2Rx8, 1.35 V) PC3L-10600 CL9 ECC 1333
MHz LP UDIMM
16 (8 per CPU)
-
RDIMMs
49Y1405
2 GB (1x 2 GB, 1Rx8, 1.35 V) PC3L-10600 CL9 ECC DDR3
1333 MHz LP RDIMM
24 (12 per
CPU)
-
49Y1406
4 GB (1x 4 GB, 1Rx4, 1.35 V) PC3L-10600 CL9 ECC DDR3
1333 MHz LP RDIMM
24 (12 per
CPU)
A2x, B2x
49Y1559
4 GB (1x 4 GB, 1Rx4, 1.5 V) PC3-12800 CL11 ECC DDR3
1600 MHz LP RDIMM
24 (12 per
CPU)
-
49Y1407
4 GB (1x 4 GB, 2Rx8, 1.35 V) PC3L-10600 CL9 ECC DDR3
1333 MHz LP RDIMM
24 (12 per
CPU)
-
90Y3178
4 GB (1x 4 GB, 2Rx8, 1.5 V) PC3-12800 CL11 ECC DDR3
1600 MHz LP RDIMM
24 (12 per
CPU)
-
49Y1397
8 GB (1x 8 GB, 2Rx4, 1.35 V) PC3L-10600 CL9 ECC 1333
MHz LP RDIMM
24 (12 per
CPU)
C2x, C4x, D2x, F2x
90Y3109
8 GB (1x 8 GB, 2Rx4, 1.5 V) PC3-12800 CL11 ECC DDR3
1600 MHz LP RDIMM
24 (12 per
CPU)
52x, 62x, G2x, H2x,
J2x, L2x
49Y1399
8 GB (1x 8 GB, 4Rx8, 1.35 V) PC3L-8500 CL7 ECC DDR3
1066 MHz LP RDIMM
16 (8 per CPU)
-
49Y1563
16 GB (1x 16 GB, 2Rx4, 1.35 V) PC3L-10600 CL9 ECC DDR3
1333 MHz LP RDIMM
24 (12 per
CPU)
-
LRDIMMs
90Y3105
32 GB (1x 32 GB, 4Rx4, 1.35 V) PC3L-10600 CL9 ECC DDR3
1333 MHz LP LRDIMM
24 (12 per
CPU)
-
