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What Your Server Offers - IBM 7945G2U Installation And User Manual

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Table 1. Features and specifications (continued)
Electrical input with hot-swap ac power
supplies:
v Sine-wave input (47 - 63 Hz) required
v Input voltage range automatically
selected
v Input voltage low range:
– Minimum: 100 V ac
– Maximum: 127 V ac
v Input voltage high range:
– Minimum: 200 V ac
– Maximum: 240 V ac
v Input kilovolt-amperes (kVA)
approximately:
– Minimum: 0.090 kVA
– Maximum: 0.700 kVA

What your server offers

The server uses the following features and technologies:
v UEFI-compliant server firmware
v Integrated management module
8
System x3650 M3 Types 4255, 7945, and 7949: Installation and User's Guide
Environment:
v Air temperature:
– Server on: 10°C to 35°C (50.0°F to
95.0°F); altitude: 0 to 914.4 m (3000
ft). Decrease system temperature
by 1°C for every 1000-foot increase
in altitude.
– Server off: 5°C to 45°C (41.0°F to
113.0°F); maximum altitude: 3048 m
(10000 ft)
– Shipment: -40°C to +60°C (-40°F to
140°F); maximum altitude: 3048 m
(10000 ft)
v Humidity:
– Server on: 20% to 80%; maximum
dew point: 21°C; maximum rate of
change 5°C per hour.
– Server off: 8% to 80%; maximum
dew point: 27°C
– Shipment: 5% to 100%
v Particulate contamination:
Attention:
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" on page
165.
IBM System x Server Firmware offers several features, including Unified
Extensible Firmware Interface (UEFI) 2.1 compliance, Active Energy Manager
technology, enhanced RAS capabilities, and BIOS compatibility support. UEFI
replaces the basic input/output system (BIOS) and defines a standard interface
between the operating system, platform firmware, and external devices.
UEFI-compliant System x servers are capable of booting UEFI-compliant
operating systems, BIOS-based operating systems, and BIOS-based adapters as
well as UEFI-compliant adapters.
Note: The server does not support DOS.
The integrated management module (IMM) combines service processor
functions, video controller, and (when an optional virtual media key is installed)
remote presence function in a single chip. The IMM provides advanced
service-processor control, monitoring, and alerting function. If an environmental
condition exceeds a threshold or if a system component fails, the IMM lights
LEDs to help you diagnose the problem, records the error in the event log, and
alerts you to the problem. Optionally, the IMM also provides a virtual presence
capability for remote server management capabilities. The IMM provides remote
server management through industry-standard interfaces:
– Intelligent Platform Management Interface (IPMI) version 2.0
Hot-swap fans:
Three - provide redundant cooling.
Power supply:
v Up to two hot-swap power supplies for
Note: You cannot mix 460-watt and
675-watt power supplies, or high-efficiency
and non-high-efficiency power supplies, or
ac and dc power supplies in the server.
Acoustical noise emissions:
v Declared sound power, idle: 6.3 bel
v Declared sound power, operating: 6.5 bel
Heat output:
Airborne particulates and
Approximate heat output:
v Minimum configuration: 662 Btu per hour
v Maximum configuration: 2302 Btu per
redundancy support
– 460-watt ac
– 675-watt ac
– 675-watt high-efficiency ac
– 675-watt dc
(194 watts)
hour (675 watts)

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