Hitachi 100GB 7200 RPM HTE721010G9SA00 Manual Do Utilizador

Travelstar E7K100 (Serial ATA) Hard Disk Drive Specification

27 

• Probability of not recovering data is 1 in 10

13

• 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). 

To avoid any degradation of performance throughput or error rate 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. 

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 hold 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 the required power-off sequence. 

Service life of the drive is approximately 5 years or 30,000 power on hours, whichever comes first, under the fol-
lowing assumptions.

• Less than 732 power on hours per month

• Seeking/Writing/Reading operation is less than 50% of power on hours. 

This does not represent any warranty or warranty period. Applicable warranty and warranty period are covered by 
the purchase agreement. 

None

The product supports a minimum of 600,000 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