Dell Data Domain DD9500 Hardware Overview And Installation Manual page 17

Operating temperature: 50° to 95° F (10° to 35° C), derate 1.1° C per 1000 feet,
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above 7500 feet up to 10,000 feet
Operating humidity: 20% to 80%, non-condensing
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Non-operating temperature: -40° to +149° F (-40° to +65° C)
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Operating acoustic noise: Sound power, LWAd, is 7.7 bels.
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Hardware Overview
System specifications
17