IBM DCS9550 1S1 manual Environment, Airflow

Introduction

1.4.6Environment

Table 1–3		Ambient Temperature and Humidity
			Temperature Range			Relative Humidity	Max. Wet Bulb
Operational				5°C to 40°C		20% to 80%	23°C
						non-condensing
Non-Operational				0°C to +50°C		8% to 80%	27°C
						non-condensing
Storage				1°C to +60°C		8% to 80%	29°C
						non-condensing
Shipping				-40°C to +60°C		5% to 100%	29°C
						non-precipitating
Airflow					System must be operated with low pressure rear exhaust installation
					(Back pressure created by rack doors and obstacles not to exceed
						5 pascals [0.5mm Water gauge])
Altitude, Operational						0 to 2133 m (0 to 7,000ft)
						(10,000ft at maximum ambient of 35°C)
Altitude, Non-Operational						-305 to 12,192m (-1000 to 40,000ft)
Shock, Operational						Vertical axis 5g peak 1/2 sine, 10ms
Shock, Non-Operational						30g 10ms 1/2 sine
Vibration, Operational						0.21grms 5-500 Hz Random
Vibration, Non-Operational						1.04grms 2-200 Hz Random
Vibration, Relocation						0.3g 2-200 Hz sine
Acoustics					Less than 6.0 LwA
Orientation & Mounting					19" Rack mount (3EIA Units)
•	Rack Rails				To fit 800mm depth Racks compliant with IEC 297
•	Rack Characteristics				Back pressure not exceeding 5 pascals (0.5mm water gauge)
Safety & Approvals					CE, UL, cUL

IBM System Storage DCS9550 1S1 Storage Expansion Unit Installation, Service, and User Guide 11