HP ProLiant SL4545 HP ProLiant SL4545 G7 Server Node User Guide - Page 33

Memory options, Memory subsystem architecture, Single-rank and dual-rank DIMMs

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15. Install the access panel (on page 21). 16. Install the node into the chassis ("Installing a node into the chassis" on page 25). 17. Power up the node ("Powering up the system" on page 19). Memory options The node supports single- and dual-rank PC3L-10600 (DDR-1333) RDIMMs operating at up to 1333 MT/s. Speed, voltage, and capacity DIMM type RDIMM RDIMM RDIMM DIMM rank Single-rank Dual-rank Dual-rank DIMM capacity 4 GB 8 GB 16 GB Native speed (MT/s) 1333 1333 1333 Voltage LV LV LV Memory subsystem architecture The memory subsystem in this node is divided into channels. Each processor supports three channels, and each channel supports two DIMM slots, as shown in the following table. DIMM slots in this server are identified by number and by letter. Letters identify the population order. Slot numbers indicate the DIMM slot ID for spare replacement. Channel 1 2 3 Slot designation A D B E C F Slot number 1 2 3 4 5 6 This multichannel architecture provides enhanced performance in advanced ECC mode. For the location of the slot numbers, see "DIMM slots (on page 8)." Single-rank and dual-rank DIMMs DIMM configuration requirements are based on these classifications: • Single-rank DIMM-One set of memory chips that is accessed while writing to or reading from the memory. • Dual-rank DIMM-Two single-rank DIMMs on the same module, with only one rank accessible at a time. The server memory control subsystem selects the proper rank within the DIMM when writing to or reading from the DIMM. Dual-rank DIMMs provide the greatest capacity with the existing memory technology. For example, if current DRAM technology supports 2-GB single-rank DIMMs, a dual-rank DIMM would be 4 GB. Hardware options installation 33

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Hardware options installation 33
15.
Install the access panel (on page
21
).
16.
Install the node into the chassis ("
Installing a node into the chassis
" on page
25
).
17.
Power up the node ("
Powering up the system
" on page
19
).
Memory options
The node supports single- and dual-rank PC3L-10600 (DDR-1333) RDIMMs operating at up to 1333 MT/s.
Speed, voltage, and capacity
DIMM type
DIMM rank
DIMM capacity
Native speed (MT/s)
Voltage
RDIMM
Single-rank
4 GB
1333
LV
RDIMM
Dual-rank
8 GB
1333
LV
RDIMM
Dual-rank
16 GB
1333
LV
Memory subsystem architecture
The memory subsystem in this node is divided into channels. Each processor supports three channels, and
each channel supports two DIMM slots, as shown in the following table.
DIMM slots in this server are identified by number and by letter. Letters identify the population order. Slot
numbers indicate the DIMM slot ID for spare replacement.
Channel
Slot designation
Slot number
1
A
D
1
2
2
B
E
3
4
3
C
F
5
6
This multichannel architecture provides enhanced performance in advanced ECC mode. For the location of
the slot numbers, see "DIMM slots (on page
8
)."
Single-rank and dual-rank DIMMs
DIMM configuration requirements are based on these classifications:
•
Single-rank DIMM—One set of memory chips that is accessed while writing to or reading from the
memory.
•
Dual-rank DIMM—Two single-rank DIMMs on the same module, with only one rank accessible at a time.
The server memory control subsystem selects the proper rank within the DIMM when writing to or reading
from the DIMM.
Dual-rank DIMMs provide the greatest capacity with the existing memory technology. For example, if current
DRAM technology supports 2-GB single-rank DIMMs, a dual-rank DIMM would be 4 GB.