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5.3
Reliability
5.3.1
Data Reliability
Probability of not recovering data ....... 1 in 10
13
bits read
ECC implementation
On-The-Fly correction, performed as a part of read channel function, recovers up to 12 symbols of error
in 1 sector. (1 symbol is 8 bits.)
5.3.2
Failure Prediction ( S.M.A.R.T.)
DARA-2xxxxx supports S.M.A.R.T. function. The details are described in 10.7, “S.M.A.R.T. Function” on
page 82 and 12.31, “S.M.A.R.T. Function Set (B0h)” on page 156.
5.3.3
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 H D A 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.
5.3.4
Service Life and Usage Condition
The drive is designed to be used under the following conditions.
Within specifications of Shock, Vibration, Temperature, Humidity, Altitude, and Magnetic Field.
ESD protective handling.
Without covering breathing hole on top cover.
Without pressing top cover.
Less than 250 (333 for DARA-225000) power-on hours per month.
Seeking/Writing/Reading operation be less than 20% of power-on hours.
The power requirements be satisfied.
Drive frame be grounded electrically to the system through four screws.
Mounting with recommended screw depth and torque.
Interface physical and electrical requirements be satisfied per ATA-4.
Power off sequence according to 5.3.6.2, “ Required Power-Off Sequence” on page 24.
Service life of DARA-2xxxxx is approximately 5 years or 15,000 (20,000 for DARA-225000) power-on
hours, whichever comes first.
1
Actual product life and failure rate depend on duty cycle and environmental conditions.
Consult your IBM representative for reliability estimate if atypical operating conditions are anticipated.
5.3.5
Preventive Maintenance
None.
1
This does not represent any warranty nor warranty period. Applicable warranty and warranty period are covered by
purchase agreement.
Specification
23
Содержание DARA-206000 - Travelstar 12 GB Hard Drive
Страница 2: ......
Страница 9: ...Index 193 Contents vii...
Страница 10: ...viii OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
Страница 13: ...Figure 2 Breathing hole caution of DARA 2xxxxx General 3...
Страница 14: ...4 OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
Страница 16: ...6 OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
Страница 17: ...Part 1 Functional Specification Copyright IBM Corp 1999 7...
Страница 18: ...8 OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
Страница 37: ...Figure 22 Hole Location of DARA 218000 215000 Figure 23 Hole Location of DARA 225000 Specification 27...
Страница 70: ...60 OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
Страница 71: ...Part 2 ATA Interface Specification Copyright IBM Corp 1999 61...
Страница 72: ...62 OEM Specifications of DARA 2xxxxx 2 5 inch HDD Rev 2 1...
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Страница 206: ...Published in Japan S25L 1638 03...