Table 10. Temperature and humidity requirements (continued)
Condition Parameter Requirement
Relative humidity (no
condensation)
Operating range 20% to 80%
Storage range 10% to 93%
Transit range 5% to 95%
Maximum dew point 26° C (79° F)
Maximum gradient 10% per hour
Notes:
1. The non-operating environment must not exceed the operating environment
limits for longer than 60 days.
2. The storage environment must not exceed the operating environment limits for
longer than 1 year.
3. Substantial deviations from the suggested operating range, in either direction, if
sustained for extended periods of time, will expose the unit to greater risk of
failure from external causes.
Altitude
Table 11 lists the acceptable altitudes for operating, storing, and shipping the
DS4800 Storage Subsystem.
Table 11. DS4800 Storage Subsystem altitude ranges
Environment Altitude
Operating 30.5 m (100 ft.) below sea level to 3048 m
(10,000 ft.) above sea level
Storage 30.5 m (100 ft.) below sea level to 3048 m
(10,000 ft.) above sea level
Transit 30.5 m (100 ft.) below sea level to 12,000 m
(40,000 ft.) above sea level
Airflow and heat dissipation
Figure 10 on page 24 shows the intended airflow for an DS4800 Storage
Subsystem. Allow at least 30 inches in front of the storage subsystem and at least
24 inches behind the storage subsystem for service clearance, proper ventilation,
and heat dissipation.
Chapter 1. Introduction 23
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