IBM Enterprise Storage Server 2105 E10, Introduction And Planning Manual

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Table 15. Power consumption and environmental information for the ESS
Measurement Units Models E10 or
F10 Models E20 or
F20 Models E20 or
F20 with
Expansion
Enclosure
Electric power kVA 3.5 5 12
Thermal load BTU/hour 11 000 16 000 40 000
Capacity of
exhaust (See
Note.) Cubic meters per
min (cubic ft per
min) 44.2 (1500) 51.8 (1800) 102.7 (3600)
Single-phase
and three-phase
leakage current Milliamps 17 17 17
Startup current Amps
≤
100
≤
100
≤
100
Startup current
duration microseconds < 200 < 200 < 200
Idle and
operating-sound
power (LwAd) bels 7.5 7.5 Not applicable
Idle and
operating-sound
pressure (LpA) decibels 59 59 Not applicable
Note: The ESS takes air in through the front cover and exhausts air from the rear and top.
Cooling requirements
For cooling, install two fully perforated tiles in front of each ESS. Also install one
fully perforated tile in front of an expansion enclosure and one fully perforated tile at
the back of an expansion enclosure.
Operating environment
The following sections list the environmental operating points and ranges that IBM
recommends for the ESS.
Power on environment
Table 16 gives the operating extremes for an ESS with the power on.
Table 16. Operating extremes with the power on
Altitude 0 - 2133 m (7000 ft)
Dry Bulb Temperature 16 - 32°C (60 - 90°F)
Relative humidity 20 - 80%
Wet Bulb Temperature 23°C (73°F)
Table 17 gives the operating points that IBM recommends for an ESS with the
power on.
Table 17. Recommended operating points with the power on
Temperature (See Attention) 22°C (72°F)
Relative humidity (See Attention) 45%
Chapter 3. Installation planning
59