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Chapter 2. Installing the storage unit
You can install the storage unit in an Electronic Industries Association (EIA) 310
standard rack.
You will need a flat-blade screwdriver and a Phillips-head screwdriver to install your
storage unit. Each type of enclosure comes with general installation instructions for
installing optional devices.
Operating specifications
The following table summarizes the operating specifications of the storage unit.
Electrical input
v Sine-wave input (50 to 60 Hz) is
required
v Input voltage:
– Low range:
- Minimum: 90 V ac
- Maximum: 127 V ac
– High range:
- Minimum: 198 V ac
- Maximum: 257 V ac
– Input kilovolt-amperes (kVA)
approximately:
- Minimum configuration: 0.06
kVA
- Maximum configuration: 0.45
kVA
© Copyright IBM Corp. 2001
Environment
v Air temperature:
– Storage unit on: 10° to 35° C
(50° to 95° F) Altitude: 0 to 914
m (3000 ft)
– Storage unit on: 10° to 32° C
(50° to 90° F) Altitude: 914 m
(3000 ft.) to 2133 m (700 ft)
v Humidity: 8% to 80%
Size (with front panel and without
mounting rails)
v Depth: 53.8 cm (21.2 in)
v Height: 12.8 cm (5 in)
v Width: 44.7 cm (17.6 in)
Weight
v Standard storage unit as shipped:
22.5 kg (49.5 lb)
v Typical storage unit fully loaded:
36.1 kg (79.4 lb)
Acoustical noise emissions values
For open bay (no drives installed) and
maximum system configurations (14
hard disk drives installed).
v Sound power (idling):
– 5.6 bels (open bay)
– 5.7 bels (typical)
v Sound power (operating):
– 5.6 bels (open bay)
– 6.5 bels (typical)
v Sound pressure (idling):
– 44 dBA (open bay)
– 47 dBA (typical)
v Sound pressure (operating):
– 44 dBA (open bay)
– 54 dBA (typical)
These levels are measured in
controlled acoustical environments
according to ISO 7779 and are
reported in accordance with ISO 9296.
The declared sound power levels
indicate an upper limit, below which a
large portion of machines operate.
Sound pressure levels in your location
might exceed the average 1-meter
values stated because of room
reflections and other nearby noise.
9
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