IBM DJSA-210 Hard Drive Specifications - Page 43

Service life and usage condition, 4.5 Preventive maintenance, 4.6 Load/unload - warranty

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6.4.4 Service life and usage condition The drive is designed to be used under the following conditions: ! The drive should be operated within specifications of shock, vibration, temperature, humidity, altitude, and magnetic field. ! The drive should be protected from ESD. ! The breathing hole in the top cover of the drive should not be covered. ! Force should not be applied to the cover of the drive. ! The specified power requirements of the drive should be satisfied. ! The drive frame should be grounded electrically to the system through four screws. ! The drive should be mounted with the recommended screw depth and torque. ! The interface physical and electrical requirements of the drive should satisfy ATA-4. ! The power-off sequence of the drive should comply with the 6.4.6.2,"Required power-off sequence." Service life of DJSA-2xx is approximately 5 years or 20,000 power on hours, whichever comes first under the following assumptions. ! Less than 333 power on hours per month. ! Seeking/Writing/Reading operation is less than 20% of power on hours. This does not represent any warranty or warranty period. Applicable warranty and warranty period are covered by the purchase agreement. 6.4.5 Preventive maintenance None. 6.4.6 Load/unload The product supports a minimum of 300,000 normal load/unloads. Load/unload is a functional mechanism of the hard disk drive. It is controlled by the drive micro code. Specifically, unloading of the heads is invoked by the following commands: ! Hard reset ! Soft reset ! Standby ! Standby immediate ! Sleep Load/unload is also invoked as one of the idle modes of the drive. The specified start/stop life of the product assumes that load/unload is operated normally, not in emergency mode. 6.4.6.1 Emergency unload When hard disk drive power is interrupted while the heads are still loaded the micro code cannot operate and the normal 5 volt power is unavailable to unload the heads. In this case, normal unload is not Travelstar 32GH/30GT/20GN hard disk drive specifications 29

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6.4.4 Service life and usage condition
The drive is designed to be used under the following conditions:
!
The drive should be operated within specifications of shock, vibration, temperature, humidity, altitude,
and magnetic field.
!
The drive should be protected from ESD.
!
The breathing hole in the top cover of the drive should not be covered.
!
Force should not be applied to the cover of the drive.
!
The specified power requirements of the drive should be satisfied.
!
The drive frame should be grounded electrically to the system through four screws.
!
The drive should be mounted with the recommended screw depth and torque.
!
The interface physical and electrical requirements of the drive should satisfy ATA-
4
.
!
The power-off sequence of the drive should comply with the
6.4.6.2,"Required power-off sequence.”
Service life of DJSA-2xx is approximately 5 years or 20,000 power on hours, whichever comes first under
the following assumptions.
!
Less than 333 power on hours per month.
!
Seeking/Writing/Reading operation is less than 20% of power on hours.
This does not represent any warranty or warranty period.
Applicable warranty and warranty period are
covered by the purchase agreement.
6.4.5 Preventive maintenance
None.
6.4.6 Load/unload
The product supports a minimum of 300,000 normal load/unloads.
Load/unload is a functional mechanism of the hard disk drive. It is controlled by the drive micro code.
Specifically, unloading of the heads is invoked by the following commands:
!
Hard reset
!
Soft reset
!
Standby
!
Standby immediate
!
Sleep
Load/unload is also invoked as one of the idle modes of the drive.
The specified start/stop life of the product assumes that load/unload is operated normally, not in
emergency mode.
6.4.6.1 Emergency unload
When hard disk drive power is interrupted while the heads are still loaded the micro code cannot operate
and the normal 5 volt power is unavailable to unload the heads. In this case, normal unload is not
Travelstar 32GH/30GT/20GN hard disk drive specifications
29