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• Features on Demand
If a Features on Demand feature is integrated in the server or in an optional device that is installed in the
server, you can purchase an activation key to activate the feature. For information about Features on
Demand, see:
https://fod.lenovo.com/lkms
• Flexible network support
The server has an Open Compute Project (OCP) 3.0 slot for an OCP 3.0 Ethernet adapter, which provides
two or four network connectors for network support.
• Integrated Trusted Platform Module (TPM)
This integrated security chip performs cryptographic functions and stores private and public secure keys.
It provides the hardware support for the Trusted Computing Group (TCG) specification. You can
download the software to support the TCG specification.
Trusted Platform Module (TPM) of version 2.0 is supported.
For more information on TPM configurations, see "Enable TPM" in the Maintenance Manual.
Note: For customers in Chinese Mainland, a Lenovo-qualified TPM 2.0 adapter (sometimes called a
daughter card) may be pre-installed.
• Large system-memory capacity
The server supports up to 32 TruDDR4 registered DIMMs (RDIMMs) or three-dimensional stacking
registered DIMMs (3DS RDIMMs). For more about the specific types and maximum amount of memory,
see "Specifications" on page 5.
• Large data-storage capacity and hot-swap capability
The hot-swap server models support a maximum of fourteen 3.5-inch hot-swap Serial Attached SCSI
(SAS) hard disk drives or hot-swap Serial ATA (SATA) hard disk drives. The simple-swap server models
support a maximum of eight 3.5-inch simple-swap SATA hard disk drives.
With the hot-swap feature, you can add, remove, or replace hard disk drives without turning off the server.
• Lenovo XClarity Controller (XCC)
The Lenovo XClarity Controller is the common management controller for Lenovo ThinkSystem server
hardware. It consolidates multiple management functions in a single chip on the server system board.
Some of the features that are unique to the Lenovo XClarity Controller are enhanced performance, higher-
resolution remote video, and expanded security options. For additional information about the Lenovo
XClarity Controller, see:
http://sysmgt.lenovofiles.com/help/topic/com.lenovo.systems.management.xcc.doc/product_page.html
• Light path diagnostics
Light path diagnostics provides LEDs to help you diagnose problems and an integrated LCD diagnostics
panel or external diagnostics handset can provide additional diagnostic information. For more information
about the light path diagnostics, see the following:
– "Drive LEDs" on page 27
– "Rear view LEDs" on page 47
– "Diagnostics panel" on page 29
– "LCD diagnostics panel/handset" on page 32
• Mobile access to Lenovo Service Information website
ThinkSystem SR665 Setup Guide
4
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