System x3550 M2 (7946)
| A four-digit feature code is used to specify a component that is configurable in the IBM configurators, the eBusiness Configurator (eConfig) and the IBM Web-based Hardware Configurator, used in US and Canada. Options that do not have feature codes cannot be integrated by IBM into a system using these IBM configurators. To purchase options separately, refer to the option part number provided in this document. |
| SBB number | Option number | Feature codes | Memory description |
|---|---|---|---|
| Memory DIMMs | |||
| 44T1470 | 44T1480 | 3963 | 1GB (1x1GB) Single Rank x8 PC3-10600 CL9 ECC DDR3-1333 LP RDIMM |
| 44T1471 | 44T1481 | 3964 | 2GB (1x2GB) Dual Rank x8 PC3-10600 CL9 ECC DDR3-1333 LP RDIMM |
| 44T1472 | 44T1482 | 3965 | 2GB DDR3-1333 1Rx4 LP RDIMM |
| 44T1473 | 44T1483 | 3966 | 4GB DDR3-1333 2Rx4 LP RDIMM |
| 46C7445 | 46C7449 | 1907 | 8GB (1x8GB) Dual Rank PC3-10600 CL9 ECC DDR3-1333 LP RDIMM |
| Associated Memory Options | |||
| 40K6887 | 41Y8269 | 1774 | IBM USB Memory Key for VMware ESXi 3.5 Update 4 |
| 46M4989 | 41Y8278 | 1776 | IBM USB Memory Key for VMware ESXi 4 |
| 59Y8348 | 41Y8283 | 1749 | IBM USB Memory Key for VMware ESXi 3.5 Update 5 |
| 59Y8349 | 41Y8287 | 3033 | IBM USB Memory Key for VMware ESXi 4.1 |
Notes:
- Memory mirroring requires an exact match between the DIMM
types and sizes on both memory buses. Memory-mirroring
effectively reduces available memory by half. - Slots 7, 8, 15, and 16 is not used for memory mirroring.
- For non-memory mirroring, DIMMS within a channel are to be
populated starting with the DIMMS farthest from the processor
in a "fill-farthest" approach with the largest memory size DIMM
first and proceeding downwards in DIMM sizes and socket
locations. - Quad Rank DDR3 SDRAM R-DIMMS are not currently supported
- Memory subsystem supports three DIMMs per channel for
single-rank and /or dual-rank DIMMs, and two DIMMs per
channel for quad-rank DIMMs. Therefore, there is a 12 DIMM
maximum limitation when quad-rank DIMMs are used.
| Model | Std. DIMM configuration |
|---|---|
| 12Y, 32Y, 42Y, 52Y, 62Y, 82Y, 3AY | 2 x 1GB DDR3-1333 1Rx8 LP RDIMM |
| 72Y, 92Y, E1Y, E2Y | 2 x 2GB DDR3-1333 2Rx8 LP RDIMM |
| E3Y | 4 x 2GB DDR3-1333 2Rx8 LP RDIMM |
Figure 1. System x3550 M2 (7946) Memory DIMM layout
Click image to enlarge
Notes:
- DIMM population sequence is in the box.
- DIMM slot assignment is next to the box.
Figure 2. System x3550 M2 (7946) Memory Subsystem Block Diagram
Click image to enlarge
Figure 3. System x3550 M2 (7946) Memory in Mirrored Mode layout
Click image to enlarge
Notes:
- DIMM population sequence in pair of two DIMMs are shown in the box.
- DIMM slot assignment is next to the box.
- CH2 is unused in Mirrored Channel mode.
