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20 Barracuda SATA Product Manual, Rev. G
Drive Specifications www.seagate.com
activity is required, the drive makes a transition to Standby mode. In both Idle and Standby mode, the drive
accepts all commands and returns to Active mode when disk access is necessary.
2.9 Environmental specifications
2.9.1 Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual
drive case temperature should not exceed 69°C (156°F) within the operating ambient conditions. Refer to
Section
3.4 on page 26 for base plate measurement location.
2.9.2 Temperature gradient
2.9.3 Humidity
2.9.3.1 Relative humidity
2.9.3.2 Wet bulb temperature
2.9.4 Altitude
2.9.5 Shock
All shock specifications assume that the drive is mounted securely with the input shock applied at the drive
mounting screws. Shock may be applied in the X, Y or Z axis.
2.9.5.1 Operating shock
These drives comply with the performance levels specified in this document when subjected to a maximum
operating shock of 80 Gs based on half-sine shock pulses of 2 ms during read operations. Shocks should not be
repeated more than two times per second.
Operating 0° to 60°C (32° to 140°F)
Non-operating –40° to 70°C (–40° to 158°F)
Operating 20°C per hour (68°F per hour max), without condensation
Non-operating 30°C per hour (86°F per hour max)
Operating 5% to 95% non-condensing (30% per hour max)
Nonoperating 5% to 95% non-condensing (30% per hour max)
Operating 37.7°C (99.9°F max)
Non-operating 40°C (104°F max)
Operating –304.8m to 3048m (–1000 ft. to 10,000+ ft.)
Non-operating –304.8m to 12,192m (–1000 ft. to 40,000+ ft.)