• Idle and Standby timers
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.
2.10Environmental specifications
Note. The removable drive cartridge should be stored for less than 60 days when exposed to continuous maximum temperature and humidity conditions of 40°C (104°F) and 80% relative humidity. Exceed- ing this duration in these conditions may result in loss of data.
2.10.1Ambient temperature
Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 65°C (149°F) within the operating ambient conditions.
Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet.
Operating | 5° to 55°C (41° to 131°F) |
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Nonoperating | |
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System storage | 0° to 30°C (0° to 86°F) |
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Drive cartridge storage | 0° to 30°C (0° to 86°F) |
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2.10.2Temperature gradient
Operating | 20°C per hour (68°F per hour max), without condensation |
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Nonoperating | 30°C per hour (86°F per hour max), without condensation |
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2.10.3Humidity
Refer to the following two sections for relative humitidy and wet bulb terperature specifications.
2.10.3.1Relative humidity
Operating | 5% to 90% noncondensing (30% per hour max) |
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Nonoperating | 5% to 95% noncondensing (30% per hour max) |
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Drive cartridge storage | 20% to 40% noncondensing (30% per hour max) |
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2.10.3.2Wet bulb temperature
Operating | 30°C (86°F) max |
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Nonoperating | 40°C (104°F) max |
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Drive cartridge storage | 25°C (77°F) max |
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10 | Momentus 5400.2 SATA Removable Drive Cartridge Product Manual, Rev. C |
