IBM IC25N040ATCS04 - Travelstar 40 GB Hard Drive, Specifications

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6.4 Reliability
6.4.1 Data reliability
!
Probability of not recovering data is 1 in 10
13
bits read
!
ECC implementation
On-the-fly correction performed as a part of read channel function recovers up to 15 symbols of error in
1 sector (1 symbol is 8 bits).
6.4.2 Failure prediction (S.M.A.R.T.)
The drive supports Self-monitoring, analysis and reporting technology (S.M.A.R.T.) function. The details
are described in section 11.8, "S.M.A.R.T. Function" on page 84 and 13.32, "S.M.A.R.T. Function Set
(B0h)" on page 165.
6.4.3 Cable noise interference
To avoid any degradation of performance throughput or error when the interface cable is routed on top or
comes in contact with the HDA assembly, the drive must be grounded electrically to the system frame by
four screws. The common mode noise or voltage level difference between the system frame and power
cable ground or AT interface cable ground should be in the allowable level specified in the power require-
ment section.
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-5.
!
The power-off sequence of the drive should comply with the 6.4.6.2, "Required power-off sequence.”
Service life of the drive 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.
Travelstar 60GH & 40GN hard disk drive specifications
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