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Table 11. DS4200 Express altitude ranges
Environment
Operating
Storage
Transit
Airflow and heat dissipation
Figure 8 shows the intended airflow for the DS4200 Express. 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.
Figure 8. DS4200 Express airflow
Table 12 lists the KVA, watts, and Btu calculations. These values assume the power
supplies have a 73 percent efficiency and a power factor of 0.99. These tabulated
power and heat dissipation values are typical for the storage subsystem. Maximum
configuration units are typically operated at higher data rates, have larger random
access memory (RAM) capacities, or have different host interface boards.
Table 12. DS4200 Express power and heat dissipation
Parameter
DS4200 Express
Acoustic noise
Table 13 lists the maximum sound levels emitted by the storage subsystem.
Table 13. DS4200 Express sound levels
Measurement
Sound power (normal operation)
Sound pressure (normal operation)
18
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
Altitude
30.5 m (100 ft.) below sea level to 3000 m
(9842 ft.) above sea level
30.5 m (100 ft.) below sea level to 3000 m
(9842 ft.) above sea level
30.5 m (100 ft.) below sea level to 12,000 m
(40,000 ft.) above sea level
KVA
Watts (AC)
0.454
443
Level
6.8 bels
68 dBA
Btu per hour
1516
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