NEC Express5800/R120g-2E - Memory; Memory Configuration

CONFIGURATION GUIDE – NEC Express5800/R120g-2E
NEC Corporation Revision 7.0 – August, 2017 13
The maximum number of logical processors supported by OS
See the table below for the maximum number of logical processors that you can actually use on your system.
Number of Logical Processors Supported by Operating Systems
Maximum Available
Number of Logical
Processors
Microsoft Windows Server 2008 R2 Standard
Microsoft Windows Server 2008 R2 Enterprise
256
1
56
Microsoft Windows Server 2012 Standard
Microsoft Windows Server 2012 Datacenter
Microsoft Windows Server 2012 R2 Standard
Microsoft Windows Server 2012 R2 Datacenter
Microsoft Windows Server 2016 Standard
Microsoft Windows Server 2016 Datacenter
640
1
56
Red Hat Enterprise Linux 6 (x86_64)
Red Hat Enterprise Linux 7
240
56
VMware ESXi 5.5
320
56
VMware ESXi 6.0
480
56
VMware ESXi 6.5
576
72
1
The maximum numbers of logical processors when using Hyper-V are below:
- Windows Server 2008 R2 : 64
- Windows Server 2012, Windows Server 2012 R2 : 320
- Windows Server 2016: 512
3 Memory
3.1 Memory Configuration
Refer to the section in accordance with your memory configuration:
 Independent Channel: Refer to 3.1.1
 Memory Sparing Configuration: Refer to 3.1.2
 Memory Mirroring / Memory Lockstep Configuration: Refer to 3.1.3
Memory Configuration Feature Comparison
See the table below for feature comparisons of memory configurations supported.
Independent
Channel
Memory
Sparing
Memory Lockstep
Memory Mirroring
Performance
Best
Better
Better
Good
Data Protection
No
Multiple single bit error
protection
No
Multiple single bit and
multi bit error
protection
Redundancy
No
Partly
No
Fully
Data Correction
ECC, x4 SDDC
ECC, x4 SDDC
ECC, x8 SDDC
ECC, x4 SDDC
Available Memory
Full physical memory
3/4 physical memory
Full physical memory
Half physical memory
Available Memory
Channels
4
4
4
4
Notes
-
All DIMMs in the
system must be
identical.
Paired DIMMs must be
identical.
Paired DIMMs must be
identical.