IBM DCS3860, Installation, User'S, And Maintenance Manual

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Temperature and humidity
Table 8 lists the acceptable temperature and humidity ranges for the DCS3860
storage expansion enclosure when in storage or in transit.
Note: Substantial deviations from the suggested operating range, in either
direction, if sustained for extended periods of time, expose the unit to greater risk
of failure from external causes.
Table 8. Temperature and humidity requirements for storage expansion enclosure when in
storage or in transit
.
Condition Parameter Requirement
Temperature 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 10% to 90%
Transit range 5% to 95%
Maximum dew point 26° C (79° F)
Maximum gradient 10% per hour
Altitude
Table 9 lists the acceptable altitudes for operating, storing, and shipping the
DCS3860.
Table 9. DCS3860 altitude ranges
Environment Altitude
Operating 30.5 m (100 ft.) below sea level to 3000 m
(9,840 ft) above sea level
Storage 30.5 m (100 ft.) below sea level to 3000 m
(9,840 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 11 on page 20 shows the intended airflow for the DCS3860. Allow at least 30
inches in front of the storage system and at least 24 inches behind the storage
system for service clearance, ventilation, and heat dissipation.
Chapter 1. Introduction
19