Hitachi DK23DA-30F Owners Manual - Page 15

Environmental Specifications and Reliability, DK23DA - 10f

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3.2 Environmental Specifications and Reliability Table 3.2 Environmental Specification and Reliability No. Item Specification DK23DA- DK23DA- DK23DA- DK23DA- 40F 30F 20F 10F 1 Ambient *1 Operational 5 to 55°C temperature Non-operational -40 to 70°C *2 Temperature gradient Max. 20°C /hour 2 Relative humidity Operational 5 to 90 % Non-operational 5 to 95 % Maximum wet Operational 29°C (without condensation) bulb Non-operational 40°C (without condensation) *3 3 Vibration Operational 1.0mm p-p or less (5 - 22Hz) 9.8 m/s2 (1.0G) or less m/s2 (22 - 500Hz) Non-operational 5mm p-p or less (5 - 22Hz) 49m/s2(5G) or less (22 - 500Hz) 4 Shock *6 Operational 1,764m/s2(180G) or less (2 ms, half sine wave) Non-operational 7,840m/s2(800G) or less (1 ms, half sine wave) 5 Atmospheric condition Without corrosive vapors or salt 6 Acoustic-noise Idle Typical 2.4 Bels *4 seek Typical 3.1 Bels 7 Height Operational 3,000m or less (Altitude) Non-operational 12,000m or less Height gradient Max. 300m/min.(3.1kpa/min.) 8 Data reliability Less than 1 non-recoverable error in (*5) (with retries and ECC) 10 E 13 bits read 9 External magnetic field 1,500 micro Tesla (DC) or less *1 :Ambient temperature should be measured at point 10 mm away from the nameplate of the drive. If the maximum operational ambient temperature cannot be measured at a point 10 mm away from the nameplate, a substitution method is stipulated in the table below. Ambient temperature 55°C 5°C Temperature at cover (Point A) 62°C 5°C Measurement point (Point Aʣ *2 :In case the ambient temperature is -40 to 0°C, the drive should be packed in HDD package box. Please see specification 5.1 Packing for reference. Caution Maximum power-off interval is 12 months. *3 :In case of the maximum wet bulb 40°C , the drive should be packed in HDD package box with ESD bag and desiccant. Please see specification 5.1 Packing for reference. If the drive is not packed in the HDD package box with ESD bag and desiccant, maximum wet bulb 29°C is applied. K6602705 Rev.3 08.20.01 - 15 -

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K6602705
Rev.3
08.20.01
- 15 -
3.2 Environmental Specifications and Reliability
Table 3.2
Environmental Specification and Reliability
No.
Item
Specification
DK23DA-
40F
DK23DA-
30F
DK23DA-
20F
DK23DA-
10F
1
Ambient
*1
Operational
5 to 55
°
C
temperature
Non-operational
-40 to 70
°
C
*2
Temperature gradient
Max. 20
°
C /hour
2
Relative humidity
Operational
5 to 90 %
Non-operational
5 to 95 %
Maximum wet
Operational
29
°
C (without condensation)
bulb
Non-operational
40
°
C (without condensation)
*3
3
Vibration
Operational
1.0mm p-p or less
(5 - 22Hz)
9.8 m/s
2
(1.0G) or less
m/s
2
(22 – 500Hz)
Non-operational
5mm p-p or less
(5 – 22Hz)
49m/s
2
(5G) or less
(22 – 500Hz)
4
Shock
*6
Operational
1,764m/s
2
(180G) or less (2 ms, half sine wave)
Non-operational
7,840m/s
2
(800G) or less (1 ms, half sine wave)
5
Atmospheric condition
Without corrosive vapors or salt
Idle
Typical 2.4 Bels
6
Acoustic-noise
*4
seek
Typical 3.1 Bels
7
Height
Operational
3,000m or less
(Altitude)
Non-operational
12,000m or less
Height gradient
Max. 300m/min.(3.1kpa/min.)
8
(
*5
)
Data reliability
(with retries and ECC)
Less than 1 non-recoverable error in
10 E 13 bits read
9
External magnetic field
1,500 micro Tesla (DC) or less
*1
:Ambient temperature should be measured at point 10 mm away from the nameplate of the drive. If the
maximum operational ambient temperature cannot be measured at a point 10 mm away from the
nameplate, a substitution method is stipulated in the table below.
Ambient
temperature
Temperature at cover
(Point A)
55
°
C
62
°
C
5
°
C
5
°
C
*2
:In case the ambient temperature is -40 to 0
°
C, the drive should be
packed in HDD package box. Please see specification 5.1 Packing
for reference.
Maximum power-off interval is 12 months.
*3
:In case of the maximum wet bulb 40
°
C , the drive should be packed in HDD package box with ESD bag
and desiccant. Please see
specification 5.1 Packing for reference.
If the drive is not packed in the HDD
package box with ESD bag and desiccant, maximum wet bulb 29
°
C is applied.
Caution
Measurement point
(Point A
）