User`s guide

4.1.1 Power and Power Cord Requirements
Before installing your controller subsystem, ensure that the correct power cable
(frequency and voltage) for your site is attached to the cabinet’s cable distribution
unit (CDU), and that the power requirements for your country and your site have
been met at the cabinet level.
For specific information about power cord plugs, refer to the StorageWorks
cabinet specific installation and user’s guides listed in this chapter and in the
preface of this manual.
4.1.2 Shelf Power Configuration Rules
Refer to the StorageWorks Solutions Shelf and SBB User’s Guide for specific
power unit configuration rules. The term power unit describes both power
supplies and battery backup units.
4.1.3 Environmental Considerations
The HS array controller subsystem operates in a business or light industrial
environment that complies with FCC Class A computing device standards. The
cleanliness of the site is important for the operation of any computer system, and
HS array controllers require adherence to cleanliness standards. Temperature
and humidity standards must be met to maintain proper operation of your
subsystem.
Environmental Specifications
The StorageWorks product line environmental specifications listed in Table 4–1
are the same as for other Digital storage devices.
Table 4–1 StorageWorks Environmental Specifications
Condition Specification
Optimum Operating Environment
Temperature
Rate of change
+18° to +24°C (+65° to +75°F)
11°C (20°F per hour)
Relative humidity 40% to 60% (noncondensing) with a step change of 10% or less
(noncondensing)
Altitude From sea level to 2400 m (8000 ft)
Air quality Maximum particle count .5 micron or larger, not to exceed 500,000
particles per cubic ft of air
Inlet air volume .026 cubic m per second (50 cubic ft per minute)
Maximum Operating Environment (Range)
Temperature +10° to +40°C (+50° to +104°F)
Derate 1.8°C for each 1000 m (1.0°F for each 1000 ft) of altitude
Maximum temperature gradient 11°C/hr (20°F/hr) ±2°C/hr (4°F
/hr)
Relative humidity 10% to 90% (noncondensing)
Maximum wet bulb temperature: 28°C (82°F)
Minimum dew point: 2°C (36°F)
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4–2 Installation