IBM HS22 User Guide - Page 44

Mirrored channel mode, Important, microprocessors

Get IBM HS22 - BladeCenter - 7870 PDF manuals and user guides
UPC - 883436054232
View all IBM HS22 manuals
Add to My Manuals
Save this manual to your list of manuals

Page 44 highlights

Table 4. System memory configuration for independent channel mode (2 microprocessors) Installed DIMM socket memory 1 2 3 4 5 6 7 8 9 10 11 12 2 DIMMs X X 3 DIMMs X X X 4 DIMMs X X X X 5 DIMMs X X X X X 6 DIMMs X X X X X X 7 DIMMs X X X X X X X 8 DIMMs X X X X X X X X 9 DIMMs X X X X X X X X X 10 DIMMs X X X X X X X X X X 11 DIMMs X X X X X X X X X X X 12 DIMMs X X X X X X X X X X X X v Mirrored channel mode: In mirrored channel mode, channels 2 and 5 are unused. The memory contents on channel 0 are duplicated in channel 1, and the memory contents of channel 3 are duplicated in channel 4. The effective memory available to the system is only half of that installed. The maximum available memory (with 16 GB DIMMs) is 32 GB for a single CPU system and 64 GB for a dual CPU system. Important: The memory configuration of channel 0 must match that of channel 1, and the memory configuration of channel 3 must match that of channel 4. For example, if a 4 GB Dual Rank DIMM is installed into the DIMM2 connector, then a 4 GB Dual Rank DIMM must also be installed into the DIMM6 connector. Table 2 on page 29 lists each channel and which DIMM connectors belong to the channel. The following table shows the order that memory DIMMs are installed to use a mirrored channel mode. Table 5. System memory configuration for mirrored channel mode (1 microprocessor) Installed DIMM socket memory 1 2 3 4 5 6 7 8 9 10 11 12 2 DIMMs X X 4 DIMMs X X X X Table 6. System memory configuration for mirrored channel mode (2 microprocessors) Installed DIMM socket memory 1 2 3 4 5 6 7 8 9 10 11 12 4 DIMMs X X X X 6 DIMMs X X X X X X 8 DIMMs X X X X X X X X v Spare channel mode: In spare channel mode, channel 2 is the spare of the active channels 0 and 1. The spare channel is not available as active memory. The maximum memory available (with 16 GB DIMMs) is 64 GB in a single CPU system and 128 GB in a dual CPU system. All three channels must have 30 BladeCenter HS22 Type 7870, 1936, and 1911: Installation and User's Guide

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
  • 83
  • 84
  • 85
  • 86
  • 87
  • 88
  • 89
  • 90
  • 91
  • 92
  • 93
  • 94
  • 95
  • 96
  • 97
  • 98
  • 99
  • 100
  • 101
  • 102
  • 103
  • 104
  • 105
  • 106
  • 107
  • 108
  • 109
  • 110
Table 4. System memory configuration for independent channel mode
(2 microprocessors)
Installed
memory
DIMM socket
1
2
3
4
5
6
7
8
9
10
11
12
2 DIMMs
X
X
3 DIMMs
X
X
X
4 DIMMs
X
X
X
X
5 DIMMs
X
X
X
X
X
6 DIMMs
X
X
X
X
X
X
7 DIMMs
X
X
X
X
X
X
X
8 DIMMs
X
X
X
X
X
X
X
X
9 DIMMs
X
X
X
X
X
X
X
X
X
10 DIMMs
X
X
X
X
X
X
X
X
X
X
11 DIMMs
X
X
X
X
X
X
X
X
X
X
X
12 DIMMs
X
X
X
X
X
X
X
X
X
X
X
X
v
Mirrored channel mode:
In mirrored channel mode, channels 2 and 5 are
unused. The memory contents on channel 0 are duplicated in channel 1, and the
memory contents of channel 3 are duplicated in channel 4. The effective memory
available to the system is only half of that installed. The maximum available
memory (with 16 GB DIMMs) is 32 GB for a single CPU system and 64 GB for a
dual CPU system.
Important:
The memory configuration of channel 0 must match that of channel
1, and the memory configuration of channel 3 must match that of channel 4. For
example, if a 4 GB Dual Rank DIMM is installed into the DIMM2 connector,
then a 4 GB Dual Rank DIMM must also be installed into the DIMM6 connector.
Table 2 on page 29 lists each channel and which DIMM connectors belong to the
channel.
The following table shows the order that memory DIMMs are installed to use a
mirrored channel mode.
Table 5. System memory configuration for mirrored channel mode
(1 microprocessor)
Installed
memory
DIMM socket
1
2
3
4
5
6
7
8
9
10
11
12
2 DIMMs
X
X
4 DIMMs
X
X
X
X
Table 6. System memory configuration for mirrored channel mode
(2 microprocessors)
Installed
memory
DIMM socket
1
2
3
4
5
6
7
8
9
10
11
12
4 DIMMs
X
X
X
X
6 DIMMs
X
X
X
X
X
X
8 DIMMs
X
X
X
X
X
X
X
X
v
Spare channel mode:
In spare channel mode, channel 2 is the spare of the active
channels 0 and 1. The spare channel is not available as active memory. The
maximum memory available (with 16 GB DIMMs) is 64 GB in a single CPU
system and 128 GB in a dual CPU system. All three channels must have
30
BladeCenter HS22 Type 7870, 1936, and 1911: Installation and User's Guide