Dimm; Maximum Supported Memory Size - NEC Express5800 Series User Manual

Chapter 2 Preparations
1.9

DIMM

Install a Dual Inline Memory Module (DIMM) to a DIMM slot on the motherboard in the server. The motherboard
provides 16 slots to install DIMMs.
The memory subsystem in this server supports LRDIMM and RDIMM.
 RDIMM offers address parity protection.
 LRDIMM supports a higher density than a single rank or dual-rank. For this reason, you can provide higher
system capacity and bandwidth by installing larger capacity DIMM.
For the information corresponding to all the types, all the types are referred to as DIMM. If you specify LRDIMM
or RDIMM, the information is applicable only to the type. It is necessary that the type of all of the memory
installed on the server is the same.
1.9.1

Maximum supported memory size

The maximum available memory size on the server depends on the architecture and OS specs.
Maximum memory sizes
Microsoft Windows Server 2012 R2 Standard *1
Microsoft Windows Server 2012 R2 Datacenter *1
Microsoft Windows Server 2016 Standard *1
Microsoft Windows Server 2016 Datacenter *1
Red Hat Enterprise Linux 7 (x86_64)
VMware ESXi 6.0u3 *2
VMware ESXi 6.5u1 *3
*1: Shown below is the maximum memory size when Hyper-V is used:
- Windows Server 2012 R2: Up to 4TB
*2: Up to 4 TB on virtual machine
*3: Up to 6 TB on virtual machine
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Important
To avoid static electricity, see Chapter 1 (1.8 Anti-static Measures) in
●
Safety Precautions and Regulatory Notices.
Use only the specified DIMMs. Installing a DIMM from a third party may
●
damage not only the DIMM but the motherboard. You will be charged to
repair failures or damages caused by the use of such products even
within the warranty period.
Tips
Up to 1536GB (64 GB x 24) can be installed in 2-CPU configuration. Up to 768 GB
(64 GB x 12) can be installed in 1-CPU configuration. No DIMM is factory installed
in standard configuration.
Important
This server does not support mix of LRDIMM and RDIMM. If you allow the mix
of any combination of these DIMM, there is a possibility that the server stops
during POST.
OS
4TB
24TB
12TB
6TB
12TB
Express5800/R120h-2E User's Guide
The maximum memory The maximum memory size
size supported on each
OS
1.0TB
1.0TB
1.0TB
1.0TB
1.0TB
1. Installing Internal Optional Devices
supported on the server