Electrical Requirements; Temperature And Humidity Requirements For Storage Subsystems In An Information Technology (It) Or Office Environment; Temperature And Humidity Requirements For Storage Subsystems In A Nebs/Etsi Compliant Environment - IBM DS3500 Installation, User's, And Maintenance Manual

Table 7. Temperature and humidity requirements for storage subsystems in an Information
Technology (IT) or office environment
Condition
Temperature (storage
subsystem On)
Relative humidity (storage
subsystem On)
Temperature (storage
subsystem Off)
Relative humidity (storage
subsystem Off)
Note:
1. The non-operating environment must not exceed the environment limits for more than
2. The storage environment must not exceed the environment limits for more than one
3. Substantial deviations from the suggested operating range, in either direction, if
Table 8 lists temperature and humidity ranges for the storage subsystem in a
NEBS/ETSI compliant environment.
Table 8. Temperature and humidity requirements for storage subsystems in a NEBS/ETSI
compliant environment
Condition
Temperature
Relative humidity
condensation)
Note:
1. In a NEBS/ETSI compliant environment, conditions are measured at a location 1.5 m (59
2. Short-term refers to a period of not more than 96 consecutive hours and a total of not

Electrical requirements

The electrical requirements to operate the DS3500 storage subsystem are specified
in this topic.
20
IBM System Storage DS3500 and EXP3500 Storage Subsystem: Installation, User's, and Maintenance Guide
60 days.
year.
sustained for extended periods of time, will expose the unit to greater risk of failure
from external causes.
1
1
(no
in.) above the floor and 400 mm (15.8 in.) in front of the equipment.
more than 15 days in one year. (This refers to a total of 360 hours in any given year, but
no more than 15 occurrences during that one-year period.)
Parameter
Operating range
Altitude
Maximum rate of change
Operating range
Maximum dew point
Maximum humidity gradient
Operating range
Maximum altitude
Maximum rate of change
Operating range
Maximum dew point
Maximum humidity gradient
Parameter
Operating range
2
Short-term
Maximum rate of change
Operating range
2
Short-term
Requirement
10° to 35°C (50.0° to 95°F)
30.5 (100 ft) below to 3000 m
(9840 ft) above sea level
10°C (18°F) per hour
20% to 80%
26°C (79°F)
10% per hour
-10° to 50°C (14.0° to 120.0°F)
3000 m (9840 ft)
15°C (27.0°F) per hour
10% to 90%
26°C (79°F)
10% per hour
Requirement
5° - 40° C (41° - 104° F)
-5° - 50° C (23° - 122° F)
30° C (54° F) per hour
5% to 85%
5% to 90% (not to exceed
0.024 kg water/kg of dry air)