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2.6
Environmental limits
Temperature and humidity values experienced by the drive must be such that condensation does not occur on any drive part.
Altitude and atmospheric pressure specifications are referenced to a standard day at 58.7°F (14.8°C).
To maintain optimal performance drives should be run at nominal drive temperatures and humidity.
Note
2.6.1
Temperature
a. Operating
41°F to 158°F (5°C to 70°C) drive case temperature range with a maximum temperature gradient of 36°F (20°C) per hour.
The maximum allowable drive case temperature is 140°F (60°C).
Seagate does not recommend operating at sustained case temperatures above 60°C.
Note
Operating at higher temperatures will reduce useful life of the product.
Air flow may be required to achieve consistent nominal case temperature values (see Section 3.4). To confirm that the required
cooling is provided for the electronics and HDA, place the drive in its final mechanical configuration, and perform random write/
read operations. After the temperatures stabilize, measure the case temperature of the drive. See Figure 2 for HDA temperature
checkpoint.
b. Non-operating
–40° to 158°F (–40° to 70°C) package ambient with a maximum gradient of 36°F (20°C) per hour. This specification assumes that
the drive is packaged in the shipping container designed by Seagate for use with drive.
HDA
Temperature
Check Point
Figure 2.
Location of the HDA temperature check point
Image is for reference only, may not represent actual drive
Note
2.6.2
Humidity
The values below assume that no condensation on the drive occurs. Maximum wet bulb temperature is 84.2°F (29°C).
2.6.2.1
Relative humidity
Operating:
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.
Nonoperating:
5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour.
2.6.3
Effective Altitude (sea level)
Operating:
–304.8 m to 3048 m (–1000 ft. to 10,000+ ft.)
Nonoperating:
–304.8 m to 12,192 m (–1000 ft. to 40,000+ ft.)
Seagate IronWolf Serial ATA Product Manual, Rev. A
13
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