Environmental specifications

Virtual Storage Platform F350, F370 Hardware Reference Guide

Version
88-07-0x
Audience
anonymous
Part Number
MK-97HM85016-05

The environmental specifications for the storage systems are described in the following table.

Temperature

CAUTION:
The following storage system components are not supported in high-temperature environments. Do not operate the following components at temperatures of 40°C or higher:
  • Hitachi Vantara-provided service processor (SVP) server

Humidity

State

CBSS controller

DBS/DBSE drive tray

Operating (%)

8 to 80

Non-operating (%)

8 to 90

Transport, storage (%)

5 to 95

Maximum wet bulb temperature (°C)

29°C (non-condensing)

Vibration

State

CBSS controller

DBS/DBSE drive tray

Operating

(m/s2)

2.5 or less (5 to 300Hz)

Within 5 seconds (resonance point: 10 Hz or less)

Non-operating

(m/s2)

5.0 or less at (5 Hz to 300 Hz: no damage to product)

9.8 (1.0 G): Ensure own safety with fall prevention.

Within 5 seconds (resonance point: 10 Hz or less)

Transport (packed)

(m/s2)

5.0 m/s or less

Impact

State

CBSS controller

DBS/DBSE drive tray

Operating

(m/s2)

20 or less

(10 ms, half sine wave)

Non-operating

(m/s2)

50 or less

(10 ms, half sine wave)

Transport (packed)

(m/s2)

80 or less

Tipping angle (°)

(Storage system tips over)

15° or less

(To be measured when installed on leveling bolts.)

Altitude

State

Controller

DBS/DBSE drive tray

Operating (m)

3,050 (Environmental temperature: 10°C to 28°C)

3,050 (Environmental temperature: 10°C to 28°C)

950 (Environmental temperature: 10°C to 40°C)

950 (Environmental temperature: 10°C to 40°C)

Non-operating (m) -60 to 12,000

Note:

  1. 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 35ºC at an altitude of 950m (3000 feet) to 28ºC at an altitude of 3050m (1000 feet).

    The allowable ambient temperature is decreased by 1ºC for every 300m increase in altitude above 950m.

Gaseous contaminant

Avoid areas exposed to corrosive gas and salty air.

State

Controller

tray

Operating

Gaseous contamination should be within ANSI/ISA S71.04-2013 G1 classification levels.1

Non-operating
1 Recommends the data centers maintain a clean operating environment by monitoring and controlling gaseous contamination.

Acoustic Noise

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 23ºC±2ºC.
  • Device installation position: The Controller Chassis is at the bottom of the rack and the Drive Box is at a height of 1.5m in the rack.
  • Measurement position: 1m away from the front, rear, left or right side of the storage system and 1.5m high (at four points).
  • Measurement value: Energy average value of the four points (front, rear, left and right).

The recommendation is to install the storage system in a computer room in a data center. It is possible to install the storage system in a general office, however, take measures against noise as required. When you replace an existing storage system with another system in a general office, especially note the following: The cooling fans in the storage system are downsized to enhance the high density of the storage system. As a result, the rotation number of the fan is increased than before to maintain the cooling performance. Therefore, the rate of the noise occupied by high-frequency content is high.

State

Controller

DBS/DBSE drive tray

Operating 60 dB (Environmental temperature 32°C or less)1 60 dB (Environmental temperature 32°C or less)1, 2, 3
Non-operating 55 dB 55 dB
Notes:
  1. The internal temperature of the system controls the rotating speed of the fan module. Therefore, this standard value might be exceeded if the maximum load continues under high-temperature environment or if a failure occurs in the system.
  2. Sound pressure level (LA) changes from 66 dB or 75 dB, according to the ambient temperature, drive configuration, and operating status. Maximum volume can reach 79 dB during maintenance procedure for a failed ENC or power supply.
  3. Acoustic power level (LwA) measured by the ISO 7779 standard is 7.2 B. This value changes from 7.2 B to 8.1 B, according to the ambient temperature, drive configuration, and operating status.

Noise Level

State

Condition

Operating (Recommended)

90 dB or less*

Note:

*Fire suppression systems and acoustic noise:

Some data center inert gas fire suppression systems when activated release gas from pressurized cylinders that moves through the pipes at very high velocity. The gas exits through multiple nozzles in the data center. The release through the nozzles could generate high-level acoustic noise. Similarly, pneumatic sirens could also generate high-level acoustic noise. These acoustic noises may cause vibrations to the hard disk drives in the storage systems resulting in I/O errors, performance degradation in and to some extent damage to the hard disk drives. Hard disk drives (HDD) noise level tolerance may vary among different models, designs, capacities and manufactures. The acoustic noise level of 90 dB or less in the operating environment table represents the current operating environment guidelines in which Hitachi storage systems are designed and manufactured for reliable operation when placed 2 meters from the source of the noise.

Hitachi does not test storage systems and data drives (includes HDDs, SSDs, and FMDs) 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. The customer is responsible to follow their local or national regulations.

To prevent unnecessary I/O error or damages to the hard disk drives in the storage systems, Hitachi recommends the following options:
  1. Install noise-reducing baffles to mitigate the noise to the hard disk drives in the storage systems.
  2. Consult the fire suppression system manufacturers on noise reduction nozzles to reduce the acoustic noise to protect the hard disk drives in the storage systems.
  3. Locate the storage system as far as possible from noise sources such as emergency sirens.
  4. If it can be safely done without risk of personal injury, shut down the storage systems to avoid data loss and damages to the hard disk drives in the storage systems.

Damage to the hard disk drives from fire suppression systems or pneumatic sirens will void the hard disk drive warranty.

Mechanical environmental conditions

Item

Operating

Non-operating

Guaranteed value to vibration1

0.98m/s2 (0.1G) or less

[frequency component 5 to 100Hz]2

Same as left column

Guaranteed value to impact

No impact

78.4m/s2 (8.0G), 15ms

Guaranteed value to seismic wave

2.5 m/s2 (0.25G) or less (250gal approx.)3

3.9m/s2 (0.4G) (400gal) or less : No critical damage for product function. (Normal operating with part replacement)

9.8m/s2 (1.0G) (1,000gal) or less: Ensure own safety with fall prevention

Notes:

1 Vibration that is constantly applied to the storage system due to construction works and so on.

2 Compliant with NEBS (Network Equipment-Building System) Office Vibration standards (GR-63-CORE zone4).

3 Compliant with IEC (International Electrotechnical Commission) standards, IEC 61584-5/Ed1 and IEC60297-Part5 (scenic test at the maximum acceleration rate of 9.8m/s2 (1.0G) equivalent to NEBS (Network Equipment-Building System) Level3).