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

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Table 10 lists the KVA, watts, and Btu calculations. These values assume that the
power supplies have an 88 percent efficiency and a power factor of 0.99. These
tabulated power and heat dissipation values are typical for the storage system.
Maximum configuration units are typically operated at higher data rates, have
larger random access memory (RAM) capacities, or have different host interface
boards.
Table 10. DCS3860 power and heat dissipation
Parameter KVA Watts (ac) Btu per hour
DCS3860 storage
system 1.177 1108.6 3791
EXP3800 expansion
unit .895 802 2736
Shock and vibration requirements
Operational Shock: The DCS3860 can withstand the following shock. Subjecting
the equipment to a single shock pulse with the following characteristics simulates
this level of shock:
v
Velocity change = 20 inches per second
v Wave form = 1/2 Sine, 10 g @5ms
Operational Vibration (Random):
While in its normal operating position, the
DCS3860 continues operating when subjected to a random vibration test using the
criteria shown in Table 11. This test uses the indicated spectral power density for
30 minutes in each of the three axes.
Table 11. Random vibration power spectral density
Hz 5 17 150 200 500
g
2
/Hz 9.0x10
-5
3.0x10
-4
3.0x10
-4
9.0x10
-5
9.0x10
-5
Front
Back
Figure 11. DCS3860 airflow
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IBM System Storage DCS3860 Storage System: Installation, User's, and Maintenance Guide