Lenovo ThinkServer RD550, User Manual And Hardware Maintenance Manual

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Table 1. ASHRAE class specifications
ASHRAE class A2 ASHRAE class A3 ASHRAE class A4
Air temperature
(operating)
10°C to 35°C (50°F to 95°F) 5°C to 40°C (41°F to 104°F) 5°C to 45°C (41°F to 113°F)
Air temperature
(storage) -40°C to 60°C (-40°F to
140°F) in original shipping
package -40°C to 60°C (-40°F to
140°F) in original shipping
package -40°C to 60°C (-40°F to
140°F) in original shipping
package
Humidity (operating) 8% to 80%
(non-condensing) 8% to 85%
(non-condensing) 8% to 90%
(non-condensing)
Humidity (storage) 8% to 90%
(non-condensing) 8% to 90%
(non-condensing) 8% to 90%
(non-condensing)
Altitude
0 to 3048 m (0 to 10 000 ft) in an unpressurized environment
Note: When the altitude exceeds 900 m (2953 ft), the defined maximum dry-bulb
temperature for operation becomes a dependent variable.
A2: This temperature value decreases by 1 °C (33.8 °F) with every 300 m (984 ft)
of altitude increase.
A3: This temperature value decreases by 1 °C (33.8 °F) with every 175 m (574 ft)
of altitude increase.
A4: This temperature value decreases by 1 °C (33.8 °F) with every 125 m (410 ft)
of altitude increase.
Electrical input
• Universal input:
– Low range:
Minimum: 100 V ac
Maximum: 127 V ac
Input frequency range: 50 to 60 Hz
– High range:
Minimum: 200 V ac
Maximum: 240 V ac
Input frequency range: 50 to 60 Hz
Software
This topic provides information about the software programs that you can use to set up, use, and maintain
the server.
To download the software programs, go to the Lenovo Support Web site at http://www.lenovo.com/support
and follow the instructions on the Web page.
BIOS and TSM update utilities
The BIOS and TSM (also known as BMC) firmware keeps updating after the shipment of the server. Lenovo
maintains pages on the Support Web site and provides the BIOS and TSM update utilities with instructions
for download to help you update the BIOS and TSM firmware if needed. For more information, see “Updating
or recovering the BIOS” on page 53 and “Updating the firmware” on page 57.
Chapter 3
.
Product overview
13