336  IBM System Storage N series Hardware Guide
ň° Relative humidity:
â Maximum operating range: 20% - 80% (non-condensing)
â Recommended operating range: 40% - 55%
â Non-operating range: 10% - 95% (non-condensing)
â Maximum wet bulb: 29 degrees C
â Maximum altitude: 3000 m (10,000 ft.)
 
ň° Wet bulb (caloric value): 2270 Btu/hr
ň° Maximum electrical power: 100 - 240 V ac, 8 - 3 A per node, 50 - 60 Hz
ň° Nominal electrical power: 
â 100 - 120 V ac, 16 A; 
â 200 - 240 V ac, 6 A, 50 - 60 Hz
ň° Noise level:
â 66 dBa @ 1 m @ 23 degrees C
â 7.2 bels @ 1 m @ 23 degrees C 
N6000 mid-range systems
This section lists the N6000 mid-range specifications.
N6210
The IBM System Storage N6240 Models C10, C20, C21, E11, and E21 feature the following 
physical specifications:
ň° Width: 44.7 cm (17.6 in.)
ň° Depth:
â 71.3 cm (28.1 in.) with cable management arms
â 65.5 cm (25.8 in.) without cable management arms
ň° Height: 13 cm (5.12 in.) (times 2 for E21)
The IBM System Storage N6240 Models C10, C20, C21, E11, and E21 feature the following 
operating environment specifications:
ň° Temperature:
â Maximum range: 10 - 40 degrees C (50 - 104 degrees F)
â Recommended: 20 - 25 degrees C (68 - 77 degrees F)
â Non-operating: -40 - 70 degrees C (-40 - 158 degrees F) 
ň° Relative humidity:
â Maximum operating range: 20% - 80% (non-condensing)
â Recommended operating range: 40% - 55%
â Non-operating range: 10% - 95% (non-condensing)
â Maximum wet bulb: 28 degrees C
â Maximum altitude: 3050 m (10,000 ft.)
 
Warning: Operating at environmental extremes can increase failure probability.
Warning: Operating at environmental extremes can increase failure probability.