1–12
Introduction
Table 1–4
(Continued)
SF7x Storage Enclosure Specifications
Characteristic
Specification
Recommended Environmental Limits
3
Temperature
18°C to 24°C (64.4°F to 75.2°F) with
an average rate of change of 3°C/hour
maximum and a step change of 3°C or less
Relative humidity
40% to 60% (noncondensing) with a step
change of 10% or less (noncondensing)
Altitude
Up to 2400 meters (8000 feet)
Air quality (maximum
particle count)
Not to exceed 500,000 particles per cubic
foot of air at a size of 0.5 micron or larger
Air volume (at inlet)
50 cubic feet per minute (0.026 cubic
meters per second)
Nonoperating environment
Temperature
-40°C to +66°C (-40°F to +151°F)
Relative humidity
10% to 80%, noncondensing
Altitude
4900 meters (16,000 feet)
SF72 enclosure acoustic noise
6.2 bels
SF73 enclosure acoustic noise
6.0 bels
SF74 enclosure acoustic noise
6.1 bels
Nominal airflow through enclosure
45 to 65 cubic feet/minute
SF72 Input power requirements
(47 to 63 Hz normal operation)
2.70 A @ 100 to 120 Vac (60 Hz),
1.20 A @ 220 to 240 Vac (50 Hz)
SF72 Power requirements during
disk ISE spinup
3.50 A @ 100 to 120 Vac (60 Hz),
3.25 A @ 220 to 240 Vac (50 Hz)
SF73 Input power requirements
(47 to 63 Hz normal operation)
2.4 A @ 100 to 120 Vac (60 Hz),
1.3 A @ 220 to 240 Vac (50 Hz)
SF73 Power requirements during
disk ISE spinup
4.7 A @ 100 to 120 Vac (60 Hz),
2.4 A @ 220 to 240 Vac (50 Hz)
SF74 Input power requirements
(47 to 63 Hz normal operation)
2.8 A @ 100 to 120 Vac (60 Hz),
1.6 A @ 220 to 240 Vac (50 Hz)
3
These limits are for optimum equipment performance and reliability.
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