SYSTEM CONFIGURATION GUIDE
–
NEC Express5800/R120g-2M
NEC Corporation
Revision 3.0
– October, 2016
19
Maximum Memory Speed
See the table below for the actual maximum memory transfer speed in Independent Channel / Memory
Sparing Configuration.
DDR4 memory speed depends on the type of DIMMs, the native memory bus speed of the memory
controller and memory configuration. All memory buses operate at the clock frequency of the DIMM with
the lowest frequency.
The maximum memory speed is 1866 MHz with Memory Sparing Configuration.
Processor Type
Populated DIMMs
# of DIMMs per
processor
DIMM Speed
E5-2603 v4
RDIMM: 4, 8, 16, 32, 64GB
-
1866 MHz
Memory Sparing
-
1866 MHz
E5-2620 v4
E5-2623 v4
E5-2630 v4
E5-2640 v4
RDIMM: 4, 8, 16, 32, 64GB
Up to 8 DIMMs -
2133 MHz
10 or more DIMMs
1866 MHz
Memory Sparing
-
1866 MHz
E5-2637 v4
E5-2643 v4
E5-2650 v4
E5-2667 v4
E5-2680 v4
E5-2690 v4
E5-2697 v4
E5-2697A v4
E5-2698 v4
E5-2699 v4
RDIMM: 4, 8, 16, 32, 64GB
Up to 8 DIMMs -
2400 MHz
10 or more DIMMs
1866 MHz
Memory Sparing
-
1866 MHz
Maximum Available Memory
See the table below for the maximum memory size that you can actually use on your system.
Maximum Memory Size Supported by Operating Systems
Maximum Available Memory
Microsoft Windows Server 2008 R2 Standard
1
32 GB
32 GB
Microsoft Windows Server 2008 R2 Enterprise
1
2 TB
1.5 TB
Microsoft Windows Server 2012 Standard
1
Microsoft Windows Server 2012 Datacenter
1
Microsoft Windows Server 2012 R2 Standard
1
Microsoft Windows Server 2012 R2 Datacenter
1
4 TB
1.5 TB
Red Hat Enterprise Linux 6 (x86_64)
Red Hat Enterprise Linux 7
6TB
1.5 TB
VMware ESXi 5.5
2
4 TB
1.5 TB
VMware ESXi 6.0
3
6 TB
1.5 TB
1
The maximum available memory size of Hyper-V systems are below:
-
Windows Server 2008 R2 Standard : 32 GB
-
Windows Server 2008 R2 Enterprise : 1TB
-
Windows Server 2012, Windows Server 2012 R2:4 TB
2
Up to 1TB of main memory is available to each virtual machine.
3
Up to 4TB of main memory is available to each virtual machine.
