Table 1. Server Specifications (continued)
Specification
Description
Environment
• Air temperature:
– Server on: 5° to 45°C (41° to 113°F); altitude: 0 to 3050 m (10,006 ft) derate
maximum dry bulb temperature 1°C (33°F) per 125 m (410 ft) above 950 m
(3,117 ft). Maximum rate of change 20°C (68°F) per hour
– Server off: 5° to 45°C (41° to 113°F)
– Shipment: -40°C to 60°C (-40°F to 140°F)
• Humidity range (noncondensing):
– Server on: Minimum = higher (more moisture) of -12°C (10°F) dew point and 8%
to 90% relative humidity; maximum dew point: 24°C (75°F)
– Server off: 8% to 90% relative humidity; maximum dew point: 27°C (80°F)
– Shipment: 5% to 100%
Notes:
• Particulate contamination
Attention: Airborne particulates and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature
might pose a risk to the server. For information about the limits for particulates and
gases, see “Particulate contamination” in ThinkSystem SR950 Maintenance
Manual.
• ASHRAE compliance information (see the “Operating Environment” section of
the
ThinkSystem SR950 Product Guide at http://lenovopress.com/LP0647
for specific
ASHRAE compliance levels for each server configuration):
– The server is designed for thermal compliance in ASHRAE A4 ambient
environments. Certain processor and adapter configurations will limit product
environmental support to ASHRAE A2 ambient conditions.
– If 82xx processors are installed, 60 mm x 38mm, 19K internal hot-swap fans
(01PG490) must also be installed to meet CPU cooling requirements at 35°C.
– 205W processors used in an eight-socket configuration might experience a
slight drop in performance under extreme workloads when the ambient
temperature is above 30°C.
– NVMe devices are supported up to an ambient temperature of 35°C.
Operating systems
Supported and certified operating systems:
• Microsoft Windows Server
• VMware ESXi
• Red Hat Enterprise Linux
• SUSE Linux Enterprise Server
References:
• Complete list of available operating systems:
https://lenovopress.com/osig.
• OS deployment instructions: “Deploy the operating system” on page 266.
Particulate contamination
Attention: Airborne particulates (including metal flakes or particles) and reactive gases acting alone or in
combination with other environmental factors such as humidity or temperature might pose a risk to the
device that is described in this document.
Chapter 1. Introduction 9
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