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Operating Limits
Environmental Recovery
The ambient temperature specification is measured at the front bezel
inlet. The site must have air conditioning of the correct size and
placement to maintain the specified ambient temperature range. The
air conditioning must be able to handle the heat dissipation
requirements of the disk enclosures.
Requirement
Ambient temperature
Temperature gradient
Relative humidity
Elevation
The operating limits for temperature and humidity must not be exceeded
inside the closed cabinet in which the
equipment in a cabinet directly above or below a
flow to the disk enclosure, because air flows through the enclosure from front
to back. Cabinet doors must not impede the front-to-back air flow.
If the system exceeds maximum ambient temperature by
approximately 10°C/18°F, the storage processors will begin an
orderly shutdown that saves cached data, shuts off the SPs, and — in
a DPE2 enclosure — powers down the disks. LCCs in each DAE2 will
power down their disks but remain powered on. If the system detects
that the temperature has dropped to an acceptable level, it restores
power to the storage processors (which power up any disks in their
enclosure), and the LCCs restore power to their disk drives.
Description
o
o
o
o
10
C to 40
C (50
F to 104
F)
o
o
10
C/hr (18
F/hr)
20% to 80% noncondensing
o
2438 m (8,000 ft) at 40
C, 3077 m (10,000 ft) at 37
DAE2
s are mounted. Mounting
Technical Specifications
o
C
DAE2
does not restrict air
Operating Limits
A-5
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