Environmental Limits; Temperature - Seagate ST400FM0323 Product Manual

6.3

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). Maximum wet bulb temperature
is 84.2°F (29°C).
Note.
To maintain optimal performance drives should be run at nominal case temperatures.
6.3.1

Temperature

a. Operating
The drive meets the operating specifications over a 32°F to 167°F (0°C to 70°C) drive internal temperature range with a maximum
temperature gradient of 36°F (20°C) per hour.
The maximum allowable drive internal temperature is 70°C. If the enclosure environment is unable to keep the internal tempera-
ture below this value the drive will reduce write activity to avoid over temperature condition. When the internal temperature is
equal or greater than 65°C the drive will issue a SMART thermal warning.
The MTBF specification for the drive assumes the operating environment is designed to maintain nominal internal temperature.
The rated MTBF is based upon a sustained internal temperature of 122°F (50°C). Occasional excursions in operating temperature
between the rated MTBF temperature and the maximum drive operating internal temperature may occur without impact to the
rated MTBF temperature. However continual or sustained operation at internal temperatures beyond the rated MTBF tempera-
ture will degrade the drive MTBF and reduce product reliability.
Air flow may be required to achieve consistent nominal internal temperature values (see Section 6.3). To confirm that the required
cooling is provided, place the drive in its final mechanical configuration, and perform random write/read operations. After the
temperatures stabilize, read the internal temperature of the drive using Seagate SeaChest or SeaTools utilities available at
www.seagate.com. See Figures below for temperature checkpoint.
b. Non-operating
–40° to 167°F (–40° to 75°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.
Seagate 1200.2 SAS SSD Product Manual, Rev. A 43