System-management software support

Electrical input				Environment
• Sine-wave input (50 to 60				•	Air temperature:
Hz) is required					— Expansion unit on: 10°
					— Expansion unit on: 10°
• Input voltage:					to 35° C (50° to 95° F)
—	Low range:				Altitude: 0 to 914 m
—	Low range:				(3000 ft)
	–	Minimum: 90 V ac			(3000 ft)
	–	Minimum: 90 V ac			— Expansion unit on: 10°
	–	Maximum: 127 V ac			— Expansion unit on: 10°
	–	Maximum: 127 V ac			to 32° C (50°
—	High range				to 90° F) Altitude: 914 m
	–	Minimum: 198 V ac			(3000 ft.) to 2133 m (700
	–	Minimum: 198 V ac			ft)
					ft)
	–	Maximum: 257 V ac		•	Humidity: 8% to 80%
— Input kilovolt-amperes				Size (with front panel and
	(kVA) approximately:			Size (with front panel and
	–	Minimum		without mounting rails
	–	Minimum		•	Depth: 53.8 cm (21.2 in)
		configuration:	0.06	•	Depth: 53.8 cm (21.2 in)
		kVA		• Height: 12.8 cm (5 in)
	–	Maximum		• Height: 12.8 cm (5 in)
	–	Maximum		• Width: 44.7 cm (17.6 in)
		configuration:	0.45	• Width: 44.7 cm (17.6 in)
		configuration:	0.45
		kVA		Weight
				Weight
				• Standard expansion unit as
					shipped: 22.5 kg (49.5 lbs)
				• Typical expansion unit fully
					loaded: 36.1 kg (79.4 lbs)

Acoustical noise emissions values

For open bay (no drives installed) and maximum system configurations (14 hard disk drives installed).

•Sound power (idling):

—5.6 bels (open bay)

—5.7 bels (typical)

•Sound power (operating):

—5.6 bels (open bay)

—6.5 bels (typical)

•Sound pressure (idling):

—44 dBA (open bay)

—47 dBA (typical)

•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.