IBM HS23 7875G3G Manuale Utente
Codici prodotto
7875G3G
IBM BladeCenter HS23
12
The following rules apply when selecting the memory configuration:
Mixing 1.5 V and 1.35 V DIMMs in the same server is supported. In such a case all DIMMs operate at
1.5 V.
The maximum number of ranks supported per channel is eight.
The maximum number of ranks supported per channel is eight.
The maximum quantity of DIMMs that can be installed in the server depends on the number of CPUs,
DIMM rank, and operating voltage, as shown in the "Max. qty supported" row in Table 6.
All DIMMs in all CPU memory channels operate at the same speed, which is determined as the
All DIMMs in all CPU memory channels operate at the same speed, which is determined as the
lowest value of:
Memory speed supported by specific CPU
Lowest maximum operating speed for the selected memory configuration that depends on rated
speed, as shown under the "Max. operating speed" section in Table 6.
Table 6. Maximum memory speeds
Specification
RDIMM
Rank
Single rank
Dual rank
Quad rank
Part numbers
46C0560 (2 GB)
46C0563 (4 GB)
00D4981 (8 GB)
46C0563 (4 GB)
00D4981 (8 GB)
90Y3147 (4 GB)
00D4989 (8 GB)
00D4989 (8 GB)
46C0564 (4 GB)
46C0568 (8 GB 2Rx4)
00D4985 (8 GB 2Rx8)
00D4985 (8 GB 2Rx8)
46C0599 (16 GB)
90Y3148 (4 GB)
90Y3149 (8 GB 2Rx4)
00D4993 (8 GB 2Rx8)
00D4993 (8 GB 2Rx8)
90Y3157 (16 GB)
00D5008 (32 GB)
Rated speed
1333 MHz
1600 MHz
1333 MHz
1600 MHz
1333 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
1.5 V
1.35 V
1.5 V
1.5 V
1.35 V
1.5 V
Max. qty
supported*
supported*
16
16
16
16
16
16
16
16
Largest DIMM
8 GB
8 GB
8 GB
16 GB
16 GB
16 GB
32 GB
32 GB
Max. memory
capacity*
capacity*
128 GB
128 GB
128 GB
256 GB
256 GB
256 GB
512 GB
512 GB
Max. memory
at rated speed*
at rated speed*
128 GB
128 GB
128 GB
256 GB
256 GB
256 GB
N/A
N/A
Maximum operating speed
1 DIMM per
channel
channel
1333
MHz
1333
MHz
1600 MHz
1333 MHz
1333 MHz
1600 MHz
800 MHz
1066
MHz
2 DIMMs per
channel
channel
1333
MHz
1333
MHz
1600 MHz
1333 MHz
1333 MHz
1600 MHz
800 MHz
1066
MHz
* Maximum quantity supported is shown for two processors installed. When one processor is installed, the
maximum quantity supported is half of what is shown.
maximum quantity supported is half of what is shown.
The following memory protection technologies are supported:
ECC
Chipkill
Memory mirroring
Memory rank sparing
If memory mirroring is used, then DIMMs must be installed in pairs (minimum of one pair per CPU), and
both DIMMs in a pair must be identical in type and size. The effective memory available to the system is
only half of that installed.
both DIMMs in a pair must be identical in type and size. The effective memory available to the system is
only half of that installed.