IBM DS4500 Portable Media Storage User Manual


 
Table 7. DS4500 temperature and humidity requirements
Condition Parameter Requirement
Temperature
1
Operating range 10° - 35° C (50° - 95° F)
Maximum rate of change 10° C (18° F) per hour
Storage range -10° - 65° C (14° - 149° F)
Maximum rate of change 15° C (27° F) per hour
Transit range -40° C to 65° C (-40° F to
149° F)
Maximum rate of change 20° C (36° F) per hour
Relative humidity (no
condensation)
Operating range 20% to 80%
Storage range 8% to 90%
Transit range 5% to 95%
Maximum dew point 26° C (79° F)
Maximum gradient 10% per hour
Note: 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 8 lists the acceptable altitudes for operating, storing, and shipping the
DS4500.
Table 8. DS4500 altitude ranges
Environment Altitude
Operating 0 m (0 ft.) to 2133 m (7000 ft.) above sea
level
Storage 30.5 m (100 ft.) below sea level to 3000 m
(9842 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 6 on page 16 shows the intended airflow for the DS4500. 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 15