IBM SAN40B-4 - System Storage Switch, Руководство пользователя и обслуживания

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Table 11. Facility requirements (continued)
Type Requirements
Thermal
v Air flows from the non-port side to the port
side. A minimum air flow of 47 cubic
feet/minute (79.8 cubic meters/hour)
available in the immediate vicinity of the
switch.
v Ambient air temperature not exceeding
40° C (104° F) while the switch is
operating
v At a minimum, adequate cooling requires
that you install the switch with the nonport
side, which contains the air intake vents,
facing the cool-air aisle
v All equipment in the rack should force air
in the same direction to avoid intaking
exhaust air
v Ensure that airflow and temperature
requirements are met on an ongoing
basis, particularly if the switch is installed
in a closed or multicabinet assembly
Cabinet (when rack-mounted)
v One rack unit in a standard EIA 48.3 cm
(19-in.) cabinet
v All equipment in cabinet grounded through
a reliable branch circuit connection and
maintain ground at all times. Do not rely
on a secondary connection to a branch
circuit, such as a power strip
v Additional weight of switch must not
exceed the cabinet’s weight limits
v
The cabinet must be secured to ensure
stability in case of unexpected movement,
such as an earthquake
Environmental requirements
Table 12 lists the acceptable environment for both operating and nonoperating
conditions.
Table 12. Environmental requirements
Condition Acceptable range during operation Acceptable range during
non-operation
Temperature 0° to 40° C (32° to 104° F) -25° to 70°C (-13° to 158°F)
Humidity 10% to 85% RH noncondensing, at 40°C
(104° F), with maximum gradient of 10%
per hour
10% to 90% RH noncondensing,
at 70° C (158° F)
Altitude 0 to 3 km (9,842 ft) above sea level 0 to 12 km (39,370 ft) above sea
level
Shock 20 G, 6 ms duration, half sine wave 33 G, 11 ms duration, half sine
Vibration 0.5 G, 0.4 grms random, 5–500 Hz 2.0 G, 1.1 grms random, 5–500
Hz
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SAN40B-4 Installation, Service, and User’s Guide