HP ProLiant BL420c HP ProLiant BL420c Gen8 Server Blade User Guide - Page 33

Lockstep memory configuration, General DIMM slot population guidelines

Get HP ProLiant BL420c PDF manuals and user guides View all HP ProLiant BL420c manuals
Add to My Manuals
Save this manual to your list of manuals

Page 33 highlights

Lockstep memory configuration Lockstep mode provides protection against multi-bit memory errors that occur on the same DRAM device. Lockstep mode can correct any single DRAM device failure on x4 and x8 DIMM types. The DIMMs in each channel must have identical HP part numbers. General DIMM slot population guidelines Observe the following guidelines for all AMP modes: • Install DIMMs only if the corresponding processor is installed. • When two processors are installed, balance the DIMMs across the two processors. • White DIMM slots denote the first slot of a channel (Ch 1-A, Ch 2-B, Ch 3-C). • Do not mix RDIMMs, UDIMMs, or LRDIMMs. • When one processor is installed, install DIMMs in sequential alphabetic order: A, B, C, D, E, and F. • When two processors are installed, install the DIMMs in sequential alphabetic order balanced between the two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C, and so forth. • For DIMM spare replacement, install the DIMMs per slot number as instructed by the system software. For detailed memory configuration rules and guidelines, use the Online DDR3 Memory Configuration Tool on the HP website (http://www.hp.com/go/ddr3memory-configurator). DIMM speeds are supported as indicated in the following table. Populated slots (per channel) 1 1 2 Rank Single or dual Quad Single or dual Speeds supported (MT/s) 1600, 1333, 1066 1333, 1066 1600, 1333, 1066 Advanced ECC population guidelines For Advanced ECC mode configurations, observe the following guidelines: • Observe the general DIMM slot population guidelines (on page 33). • DIMMs may be installed individually. Online spare population For online spare memory mode configurations, observe the following guidelines: • Observe the general DIMM slot population guidelines (on page 33). • Each channel must have a valid online spare configuration. • Each channel can have a different valid online spare configuration. • Each populated channel must have a spare rank: o A single dual-rank DIMM is not a valid configuration. o LRDIMMs are treated as dual-rank DIMMs. Hardware options installation 33

  • 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
Hardware options installation 33
Lockstep memory configuration
Lockstep mode provides protection against multi-bit memory errors that occur on the same DRAM device.
Lockstep mode can correct any single DRAM device failure on x4 and x8 DIMM types. The DIMMs in each
channel must have identical HP part numbers.
General DIMM slot population guidelines
Observe the following guidelines for all AMP modes:
•
Install DIMMs only if the corresponding processor is installed.
•
When two processors are installed, balance the DIMMs across the two processors.
•
White DIMM slots denote the first slot of a channel (Ch 1-A, Ch 2-B, Ch 3-C).
•
Do not mix RDIMMs, UDIMMs, or LRDIMMs.
•
When one processor is installed, install DIMMs in sequential alphabetic order: A, B, C, D, E, and F.
•
When two processors are installed, install the DIMMs in sequential alphabetic order balanced between
the two processors: P1-A, P2-A, P1-B, P2-B, P1-C, P2-C, and so forth.
•
For DIMM spare replacement, install the DIMMs per slot number as instructed by the system software.
For detailed memory configuration rules and guidelines, use the Online DDR3 Memory Configuration Tool
on the HP website (
).
DIMM speeds are supported as indicated in the following table.
Populated slots
(per channel)
Rank
Speeds supported
(MT/s)
1
Single or dual
1600, 1333, 1066
1
Quad
1333, 1066
2
Single or dual
1600, 1333, 1066
Advanced ECC population guidelines
For Advanced ECC mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
33
).
•
DIMMs may be installed individually.
Online spare population
For online spare memory mode configurations, observe the following guidelines:
•
Observe the general DIMM slot population guidelines (on page
33
).
•
Each channel must have a valid online spare configuration.
•
Each channel can have a different valid online spare configuration.
•
Each populated channel must have a spare rank:
o
A single dual-rank DIMM is not a valid configuration.
o
LRDIMMs are treated as dual-rank DIMMs.