You can enable rank sparing memory in the Setup Utility, select
System Settings
➙
Memory
. For more
information, see “Using the Setup Utility” on page 31.
The maximum available memory is reduced when memory rank sparing mode is enabled.
The following diagram lists the DIMM connectors on each memory channel.
Figure 43. Connectors on each memory channel
Follow the installation sequence for rank sparing mode:
• Install at least one quad-rank DIMM in a channel.
• Install at least two single-rank or dual-rank DIMMs in a channel.
Table 25. Memory rank sparing mode DIMM population sequence when only quad-rank RDIMMs are installed
Number of installed
microprocessors
DIMM connector population sequence on the system board
One
1, 4, 9, 12, 2, 5, 8, 11
Two
1, 13, 4, 16, 9, 21, 12, 24, 2, 14, 5, 17, 8, 20, 11, 23
Table 26. Memory rank sparing mode DIMM population sequence when single/dual/quad rank DIMMs are installed and
the total number of DIMMs is even
DIMMs
Number of installed
microprocessors
DIMM connector population
sequence on the system board
One Microprocessor
1st set
1
1, 2
2nd set
1
4, 5
3rd set
1
8, 9
4th set
1
11, 12
5th set
1
3, 6
6th set
1
7, 10
Two Microprocessors
1st set
2
1, 2
2nd set
2
13, 14
3rd set
2
4, 5
4th set
2
16, 17
5th set
2
8, 9
6th set
2
20, 21
118
HX1310, HX2310-E, HX3310, HX3310-F Installation and Service Guide
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