must match between the mirrored channels). If a failure occurs, the memory controller switches from the
primary memory DIMMs to the backup DIMMs.
• Large system-memory capacity
The server supports up to 64 TruDDR5 memory DIMMs operating at up to 4800 MHz. For more
information about the specific types and maximum amount of memory, see “Technical specifications” on
page 3
.
• Lightpath Diagnostics
Lightpath Diagnostics provides LEDs to help you diagnose problems. For more information about the
Lightpath Diagnostics, see
“Troubleshooting by system LEDs and diagnostics display” on page 36.
• Mobile access to Lenovo Service Information website
The server provides a QR code on the system service label, which is on the cover of the server, that you
can scan using a QR code reader and scanner with a mobile device to get quick access to the Lenovo
Service Information website. The Lenovo Service Information website provides additional information for
parts installation, replacement videos, and error codes for server support.
• Active Energy Manager
Lenovo XClarity Energy Manager is a power and temperature management solution for data centers. You
can monitor and manage the power consumption and temperature of Converged, NeXtScale, System x,
and ThinkServer servers, and improve energy efficiency using Lenovo XClarity Energy Manager.
• Redundant networking connection
The Lenovo XClarity Controller provides failover capability to a redundant Ethernet connection with the
applicable application installed. If a problem occurs with the primary Ethernet connection, all Ethernet
traffic that is associated with the primary connection is automatically switched to the optional redundant
Ethernet connection. If the applicable device drivers are installed, this switching occurs without data loss
and without user intervention.
• Redundant cooling
The redundant cooling by the fans in the server enables continued operation if one of the fans fails.
• ThinkSystem RAID support
The ThinkSystem RAID adapter provides hardware redundant array of independent disks (RAID) support
to create configurations, supporting RAID levels 0, 1, 5, 6, 10, 50, and 60.
Tech Tips
Lenovo continually updates the support website with the latest tips and techniques that you can use to solve
issues that your server might encounter. These Tech Tips (also called retain tips or service bulletins) provide
procedures to work around issues or solve problems related to the operation of your server.
To find the Tech Tips available for your server:
1. Go to
http://datacentersupport.lenovo.com and navigate to the support page for your server.
2. Click on How To’s from the navigation pane.
3. Click Article Type ➙ Solution from the drop-down menu.
Follow the on-screen instructions to choose the category for the problem that you are having.
Security advisories
Lenovo is committed to developing products and services that adhere to the highest security standards in
order to protect our customers and their data. When potential vulnerabilities are reported, it is the
2
ThinkSystem SR850 V3 System Configuration Guide
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