1. Installing Internal Optional Devices
Express5800/T120h User’s Guide
73
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.
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.
Hereafter, the information applicable to all types is mentioned as "DIMM." If it is written LRDIMM or RDIMM, it is
the information applicable only to these types.
Memories installed to the server have to be the same type.
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.
Maximum supported memory size
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 2012 R2 Standard *1
Microsoft Windows Server 2012 R2 Datacenter *1
4TB
1.5TB
Microsoft Windows Server 2016 Standard *1
Microsoft Windows Server 2016 Datacenter *1
24TB
1.5TB
Red Hat Enterprise Linux 7
12TB
1.5TB
VMware ESXi 6.0 *2
6TB
1.5TB
VMware ESXi 6.5 *3
12TB
1.5TB
*1: Shown below is the maximum memory size when Hyper-V is used:
- Windows Server 2012 R2: 4TB
*2: Up to 4 TB on virtual machine
*3: Up to 6 TB on virtual machine
