4.11 | RELIABILITY |
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| Component Life: | 5 years |
| Preventive Maintenance (PM): Not required | |
| Contact Start/Stop: | 50,000 cycles at ambient, |
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| 35,000 at Environments |
| Annualized Failure Rate (AFR) | No greater than 0.58 percent |
Drive reliability is closely related to the temperatures the drive is exposed to. The AFR is based on an operational design temperature ambient of 86° F (30° C)
4.12DISK ERRORS
Table
| Table | |
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ERROR TYPE |
| MAXIMUM NUMBER OF ERRORS |
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Recovered read errors1 |
| <10 events per 1012 bits read |
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Uncorrectable read errors2 |
| 1 event per 1015 bits read |
1.Recovered read errors are errors which require retries for data correction. Errors corrected by ECC
2.Uncorrectable read errors are those that are not correctable using an Error Correcting Code (ECC), or retries within the retry limits specified in the mode pages. The drive terminates the command either when a repeating error pattern occurs, or after both the specified number of retries and application of triple burst error correction fail to correct the error.
3.A seek error occurs when the actuator fails to reach or remain on the requested cylinder, and/or the drive requires the execution of the full calibration routine to locate the requested cylinder.