HP 9000 rp5400 Servers - Manual (Page 141)

Altitude Operation Standards
Maximum Altitude
3000 meters above sea level Operational
4572 meters above sea level Non-operational
Effects of Altitude
Some old models of tape drives, including those supplied by Hewlett-Packard, have vacuum
column transport mechanisms that are affected by atmospheric pressure. Adjustments to these
mechanisms may be required to compensate for the lower atmospheric pressure at higher altitudes.
Temperature and Humidity Operating Standards
The following table lists the temperature and humidity specifications for rp54xx servers.
Temperature and Humidity Specifications
Non-Operating Ranges Maximum Rate of
Change (per hour) Recommended
Operating Range Operational Limits Parameter
-40
o
C to +70
o
C
(-40
o
F to +158
o
F)
10
o
C (50
o
F) per hour
(With tape media)
20
o
C (68
o
F) per hour
(Without tape media)
20
o
C to 25
o
C
(68
o
F to 77
o
F)
5
o
C to 35
o
C
(41
o
F to 95
o
F)
2
Temperature
1
90% Relative humidity
(Non-condensing)
at 65
o
C (149
o
F)
30% Per hour Relative
humidity
(Non-condensing) 40 to 60% Relative
humidity
(Non-condensing) 15 to 80% Relative
humidity
(Non-condensing) at
35
o
C (95
o
F)
Operating
Humidity
1 The rp54xx has been designed to operate within the above specific temperature and relative humidity operational
limits. In general, operating any electronic equipment within the recommended ranges of temperature and humidity
will produce optimal reliability.
2 Temperature ranges stated above are at sea level. Maximum operating temperature is derated (reduced) by 2 o C for
each 1000 meters above sea level up to a maximum of 3000 meters.
NOTE: Operating ranges refer to the ambient air temperature and humidity measured at the
cabinet cooling air intake vents.
Thermal Protection Features
If the cabinet temperature approaches 35
o
C, thermal protection will be invoked. At 35
o
C +/- 2
o
C
a warning message will be displayed on the system console. At 40
o
C +/- 2
o
C an ungraceful
shutdown will occur.
Altitude Operation Standards 141