Environmental Specifications And Reliability - Hitachi DK23EB - Travelstar Series 20 GB Hard Drive Specifications

3.2 Environmental Specifications and Reliability

No.
1
Ambient *1
temperature
Temperature gradient
2 Relative humidity
Maximum wet
bulb
3 Vibration
4
Shock *6
5 Atmospheric condition
6 Acoustic-noise
*4
7 Height
(Altitude)
8
(*5) (with retries and ECC)
9 External magnetic field
*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
*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.
*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.
K6602743
Rev.2
02.12.'02
Table 3.2 Environmental Specification and Reliability
Item
Operational
Non-operational
Operational
Non-operational
Operational
Non-operational
Operational
Non-operational
Operational
Non-operational 7,840m/s 2 (800G) or less (1 ms, half sine wave)
Idle
seek
Operational
Non-operational
Height gradient
Data reliability
Temperature at cover
(Point A)
62°C
5°C
Specification
DK23EB-40
-40 to 70°C *2
Max. 20°C /hour
29°C (without condensation)
40°C (without condensation) *3
1.0mm p-p or less (5 - 22Hz)
2
9.8 m/s (1.0G) or less m/s
5mm p-p or less
2
49m/s (5G) or less (22 – 500Hz)
2,450m/s 2 (250G) or less (2 ms, half sine wave)
Without corrosive vapors or salt
Typical 2.8 Bels
Typical 3.1 Bels
3,000m or less
12,000m or less
Max. 300m/min.(3.1kpa/min.)
Less than 1 non-recoverable error in
10 E 13 bits read
1,500 micro Tesla (DC) or less
- 15 -
5 to 55°C
5 to 90 %
5 to 95 %
2
(22 – 500Hz)
(5 – 22Hz)
Measurement point
(Point A)