Environmental specifications

Virtual Storage Platform 5000 Series Hardware Guide

Part Number

The following table lists the environmental specifications for the Hitachi Virtual Storage Platform 5000 series storage systems.

Note: Environmental conditions of operation should be completed before switch on a system
Table. Environmental specifications




Not operating

Shipping and storage

Temperature range

10ºC to 40ºC6

-10ºC to 50ºC

-30ºC to 60ºC

Relative Humidity (No dew condensation)

8% to 80%

8% to 90%

5% to 95%

Max. Wet Bulb




Temperature gradient per hour





0.15 or less



Gaseous contaminants2

G1 classification levels

Altitude (m)

~ 3,050

(10ºC ~ 28ºC)

~ 950

(10ºC ~ 40ºC)6

-60 to 3,000

-60 to 3,000

Noise Level


90 dB or less1



Chassis Acoustic Level 45

  • CBX: LpAm 60dB, LwA 6.6Bel
  • CBXCL: LpAm 65dB, LwA 7.7Bel
  • HSNBX: LpAm 60dB, LwA 6.6Bel
  • DBS2: LpAm 60dB, LwA 6.4Bel
  • DBL: LpAm 60dB, LwA 6.4Bel
  • DBF3: LpAm 60dB, LwA 6.0Bel
  • DBN: LpAm 60dB, LwA 6.0Bel
  • CBX: LpAm 55dB
  • CBXCL: LpAm 55dB
  • HSNBX: LpAm 55dB
  • DBS2: LpAm 55dB
  • DBL: LpAm 55dB
  • DBF3: LpAm 55dB
  • DBN: LpAm 55dB


  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 10ºC to 35ºC while in operation.