IBM DS3950, Руководство пользователя и инструкция по установке

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Table 9. Temperature and humidity requirements for storage expansion enclosure in a typical
Information Technology (IT) or office environment
Condition Parameter Requirement
Temperature Operating range 10° - 35° C (50° - 95° F)
Maximum rate of change 10° C (18° F) per hour
Relative humidity (no
condensation) Operating range 8% to 80%
Table 10. Temperature and humidity requirements for storage expansion enclosure in a
NEBS/ETSI compliant environment
Condition Parameter Requirement
Temperature
1
Operating range 5° - 40° C (41° - 104° F)
Short-term
2
-5° - 50° C (23° - 122° F)
Maximum rate of change 30° C (54° F) per hour
Relative humidity
1
(no
condensation)
Operating range 5% to 85%
Short-term
2
5% to 90% (not to exceed
0.024 kg water/kg of dry air)
Notes:
1. In a NEBS/ETSI compliant environment, conditions are measured at a location 1.5 m (59
in.) above the floor and 400 mm (15.8 in.) in front of the equipment.
2. Short-term refers to a period of not more than 96 consecutive hours and a total of not
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.)
Altitude
Table 11 lists the acceptable altitudes for operating, storing, and shipping the
EXP395.
Table 11. EXP395 altitude ranges
Environment Altitude
Operating 30.5 m (100 ft.) below sea level to 3000 m
(9842 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 7 on page 16 shows the intended airflow for the EXP395. 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