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Item
Condition
Operating
Not operating
Shipping and storage
■
DBF3: L
pAm
60dB,
L
wA
6.0Bel
■
DBN: L
pAm
60dB,
L
wA
6.0Bel
1. Fire suppression systems and acoustic noise: Hitachi does not test storage systems and hard
disk drives for compatibility with fire suppression systems and pneumatic sirens. Hitachi also
does not provide recommendations or claim compatibility with any fire suppression systems
and pneumatic sirens. Customer is responsible to follow their local or national regulations.
2. See ANSI/ISA-71.04-2013 Environmental Conditions for Process Measurement and Control
Systems: Airborne Contaminants.
3. Meets the highest allowable temperature conditions and complies with ASHRAE (American
Society of Heating, Refrigerating and Air-Conditioning Engineers) 2011 Thermal Guidelines
Class A2. The maximum value of the ambient temperature and the altitude is from 35
degrees C at an altitude of 950 meters (3000 feet) to 28 degrees C at an altitude of 3050
meters (10000 feet). The allowable ambient temperature is decreased by 1 degree C for every
300-meter increase in altitude above 950 meters.
4. The acoustic level is measured under the following conditions in accordance with ISO7779
and the value is declared based on ISO9296.
In a normal installation area (data center/general office), the storage system is surrounded by
different elements from the following measuring conditions according to ISO, such as noise
sources other than the storage system (other devices) , the walls and ceilings that reflect the
sound.
Therefore, the values described in the table do not guarantee the acoustic level in the actual
installation area.
■
Measurement environment: In a semi-anechoic room whose ambient temperature is 23
degrees C ± 2 degrees C
■
Device installation position: The Controller Chassis is at the bottom of the rack and the
Drive Box is at a height of 1.5 meters in the rack
■
Measurement position: 1 meter away from the front, rear, left, or right side of the storage
system and 1.5 meters high (at four points)
■
Measurement value: Energy average value of the four points (front, rear, left, and right)
5. Sound pressure level [LA] changes from 45 dB to 63 dB according to the ambient
temperature, drive configuration and operating status. The maximum could be 67 dB during
maintenance procedure for failed ENC or Power Supply.
6. NVMe drives have a temperature range from 10 ºC to 35 ºC while in operation.
Environmental specifications
Chapter 3: Specifications
Hitachi Virtual Storage Platform 5000 Series Hardware Guide
66