IBM x240 Compute Node 7906C2G Manuel D’Utilisation

Codes de produits

7906C2G

IBM Flex System x220 Compute Node

Table 4. Maximum memory speeds (Part 2: RDIMMs)

Spec

RDIMMs

Rank

Single rank

Dual rank

Quad rank

Part numbers

49Y1406 (4 GB)

49Y1559 (4

GB)

49Y1407 (4 GB)
49Y1397 (8 GB)

49Y1563 (16 GB)

90Y3178 (4 GB)
90Y3109 (8 GB)

00D4968 (16 GB)

49Y1400 (16 GB)

Rated speed

1333 MHz

1600 MHz

1333 MHz

1600 MHz

1066 MHz

Rated voltage

1.35 V

1.5 V

1.35 V

1.5 V

1.35 V

Operating
voltage

1.35 V

1.5 V

1.35 V

1.5 V

1.35 V

1.5 V

Max quantity*

Largest DIMM

4 GB

16 GB

Max memory
capacity

48 GB

192 GB

Max memory
at rated speed

48 GB

129 GB

192 GB

N/A

Maximum operating speed (MHz)

1 DIMM
per channel

1333 MHz

1600 MHz

1333 MHz

1600 MHz

800 MHz

2 DIMMs
per channel

1333 MHz

1600 MHz

1333 MHz

1600 MHz

800 MHz

* The maximum quantity supported is shown for two processors installed. When one processor is installed, the
maximum quantity supported is half of that shown.

The following memory protection technologies are supported:

ECC



Chipkill (for x4-based memory DIMMs; look for "x4" in the DIMM description)



Memory mirroring



Memory sparing



If memory mirroring is used, then DIMMs must be installed in pairs (minimum of one pair per processor),
and both DIMMs in a pair must be identical in type and size.

If memory rank sparing is used, then a minimum of one quad-rank DIMM or two single-rank or dual-rank
DIMMs must be installed per populated channel (the DIMMs do not need to be identical). In rank sparing
mode, one rank of a DIMM in each populated channel is reserved as spare memory. The size of a rank
varies depending on the DIMMs installed.