![background image](http://html1.mh-extra.com/html/nec/express5800-r120g-2m/express5800-r120g-2m_user-manual_3944086054.webp)
1. Installing Internal Optional Devices
Express5800/R120g-2M User’s Guide
54
Chapter 2 Preparations
1.11
DIMM
Install a Dual Inline Memory Module (DIMM) to a DIMM slot on the motherboard in the server. The motherboard
provides 24 slots to install DIMMs.
Important
To avoid static electricity, see
Chapter 1 (1.8Anti-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.
Maximum supported memory size
1.11.1
The maximum available memory size on the server depends on the architecture and OS specs.
Maximum memory sizes
OS
The maximum
memory size
supported on each OS
The maximum memory size
supported on the server
Microsoft Windows Server 2008 R2 Standard *1
32GB
32GB
Microsoft Windows Server 2008 R2 Enterprise *1
2TB
1.5TB
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
4TB 1.5TB
VMware ESXi 5.5 *2
4TB
1.5TB
VMware ESXi 6.0 *3
6TB
1.5TB
*1: Shown below is the maximum memory size when Hyper-V is used:
- Windows Server 2008 R2 Standard : 32GB
- Windows Server 2008 Enterprise, Windows Server 2008 R2 Enterprise : 1TB
- Windows Server 2012 ,Windows Server 2012 R2: 4TB
*2: Up to 1 TB on virtual machine
*3: Up to 4 TB on virtual machine.
.