Installation
(1)Error recovery parameters
The following parameters are used to control operations such as HDD internal error recovery:
a. Read/write error recovery parameters (page code = 1) |
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| Parameter |
| Default value |
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| • AWRE: | Automatic alternate block allocation at Write |
| 1 (enabled) |
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| operation |
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| • ARRE: | Automatic alternate block allocation at read |
| 1 (enabled) |
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| operation |
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| • TB: | Uncorrectable data transfer to the INIT |
| 0 (disabled) |
| • EER: | Immediate correction of correctable error |
| 1 (enabled) |
| • PER: | Report of recovered error |
| 0 (disabled) |
| • DCR: | Suppression of ECC error correction |
| 0 (Correction is |
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| enabled.) |
| • Retry count at read operation | 63 | ||
| • Retry count at write operation | 63 | ||
| • Recovery time limit |
| 30 sec | |
b. Verify error recovery parameters (page code = 7) |
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| Parameter |
| Default value |
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| • ERR: | Immediate correction of recoverable error |
| 1 (enabled) |
| • PER: | Report of recovered error |
| 0 (disabled) |
| • DTE: | Stop of command processing at successful |
| 0 (Processing is |
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| error recovery |
| continued.) |
| • DCR: | Suppression of ECC error correction |
| 0 (Correction is |
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| enabled.) |
| • Retry count at verification | 63 | ||
c. Additional error recovery parameters (page code = 21) |
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| Parameter |
| Default value |
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| • Retry count at seek error | 15 | ||
Notes:
1.The user can arbitrarily specify the following parameters according to the system requirements:
•ARRE
•AWRE
•TB
•PER
2.The user also can arbitrarily specify parameters other than the above. However, it is recommended to use the default setting in normal operations.