Reliability - Hitachi 7K320 - Travelstar Mobile Hard Drive Specifications

6.3

Reliability

Data reliability
6.3.1

Probability of not recovering data is 1 in 10

ECC implementation
On-the-fly correction performed as a part of read channel function recovers up to 16 symbols of error in 1
sector (1 symbol is 10 bits).
Failure prediction (S.M.A.R.T.)
6.3.2
The drive supports Self-monitoring, analysis and reporting technology (S.M.A.R.T.) function..
Cable noise interference
6.3.3
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
requirement section.
Service life and usage condition
6.3.4
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-6.
 The power-off sequence of the drive should comply with the
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.
Preventive maintenance
6.3.5
None.
14
bits read
Page 29 of 176
7K320 SATA OEM Specification
6.4.6.2,"Required power-off