Seagate ST9750424AS ユーザーズマニュアル
16
Momentus Product Manual, Rev. C
3.13
Reliability
Measurement type
Specification
Nonrecoverable read errors
1 per 10
14
bits read, max.
Annualized Failure Rate (AFR)
0.5%
Load/Unload (U/UL)
25°C, 50% relative humidity
32°C, 80% relative humidity
5°C, 80% relative humidity
5°C, 10% relative humidity
55°C, 16% relative humidity
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
600,000 software-controlled power on/off cycles
50,000 hard power on/off cycles
Warranty
To determine the warranty for a specific drive, use a web browser to access the
following web page:
following web page:
From this page, click on the “Verify Your Warranty” link. You will be asked to pro-
vide the drive serial number, model number (or part number) and country of pur-
chase. The system will display the warranty information for your drive.
vide the drive serial number, model number (or part number) and country of pur-
chase. The system will display the warranty information for your drive.
3.13.1
Free Fall Protection feature
The Free Fall Protection feature provides enhanced data protection against shock events that may occur while
the drive is operating. This feature is designed to decrease the likelihood of data loss by detecting a free fall
event and unloading the actuator before a shock takes place in falls of >8 inches (nominal). The drive uses a
0G sensor mounted on the printed circuit board assembly (PCBA) to sense this event.
the drive is operating. This feature is designed to decrease the likelihood of data loss by detecting a free fall
event and unloading the actuator before a shock takes place in falls of >8 inches (nominal). The drive uses a
0G sensor mounted on the printed circuit board assembly (PCBA) to sense this event.
To enable the Free Fall Protection feature on ST9750423ASG, ST9750420ASG, ST9640423ASG and
ST9500423ASG models, use Set Features command 41h. To disable this feature, use Set Features command
C1h.
ST9500423ASG models, use Set Features command 41h. To disable this feature, use Set Features command
C1h.
Information about Free Fall Events that have occurred is available through SMART Attribute FEh.
Note.
The Free Fall Protection feature is provided only on ST9750423ASG, ST9750420ASG, ST9640423ASG
and ST9500423ASG models.
and ST9500423ASG models.
3.14
Agency certification
3.14.1
Safety certification
The drives are recognized in accordance with UL 60950-1 and CSA C22.2 (950) and meet all applicable sec-
tions of IEC 60950-1 and EN60950-1 as tested by TUV North America.
tions of IEC 60950-1 and EN60950-1 as tested by TUV North America.
3.14.2
Electromagnetic compatibility
Hard drives that display the CE mark comply with the European Union (EU) requirements specified in the Elec-
tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and
the immunity levels are defined by EN 55024.
tromagnetic Compatibility Directive (89/336/EEC). Testing is performed to the levels specified by the product
standards for Information Technology Equipment (ITE). Emission levels are defined by EN 55022, Class B and
the immunity levels are defined by EN 55024.
Seagate uses an independent laboratory to confirm compliance with the EC directives specified in the previous
paragraph. Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply
with the directives when used in the test systems, we cannot guarantee that all systems will comply with the
directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O
cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators
should confirm EMC compliance and provide CE marking for their products.
paragraph. Drives are tested in representative end-user systems. Although CE-marked Seagate drives comply
with the directives when used in the test systems, we cannot guarantee that all systems will comply with the
directives. The drive is designed for operation inside a properly designed enclosure, with properly shielded I/O
cable (if necessary) and terminators on all unused I/O ports. Computer manufacturers and system integrators
should confirm EMC compliance and provide CE marking for their products.