Environmental Specifications; Ambient Temperature; Temperature Gradient; Humidity - Seagate SV35 Series SATA Product Manual

Each time the drive performs an Active function (read, write or seek), the standby timer is reinitialized and
begins counting down from its specified delay times to zero. If the standby timer reaches zero before any
drive 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 disc 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. Rec-
ommended measurement locations are shown in Figure 6.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly to 44°C (112°F) at 10,000 feet
(3,048 meters).
Operating: 0° to 60°C (32° to 140°F)
Nonoperating: –40° to 70°C (–40° to 158°F)
2.9.2

Temperature gradient

Operating: 20°C per hour (68°F per hour max), without condensation
Nonoperating: 30°C per hour (86°F per hour max)
2.9.3

Humidity

2.9.3.1 Relative humidity
Operating: 5% to 90% noncondensing (30% per hour max)
Nonoperating: 5% to 95% noncondensing (30% per hour max)
2.9.3.2 Wet bulb temperature
Operating: 37.7°C (99.9°F max)
Nonoperating: 40°C (104°F max)
2.9.4

Altitude

Operating: –60.96 m to 3,048 m (–200 ft. to 10,000+ ft.)
Nonoperating: –60.96 m to 12,192 m (–200 ft. to 40,000+ ft.)
16 SV35 Series SATA Product Manual, Rev. C