Hitachi DK23EA Specifications - Page 15

3.2 Environmental Specifications and Reliability Table 3.2 Environmental Specification and Reliability No. Item Specification DK23CA-30F DK23CA-30/15/75 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 (2 ms, half sine wave) 5 Atmospheric condition Without corrosive vapors or salt 6 Acoustic-noise Idle Typical 2.5 Bels Typical 2.8 Bels *4 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. K6602637 Rev.3 02.27.01 - 15 -