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6.3 Disk Drive Error Recovery Processing
C141-C013 387
EXTENDED command as necessary and select the error recovery flags and the
number of retries.
a. Read/Write Error Recovery Parameters (Page Code = 1)
− AWRE (automatic write reallocation enabled)
− ARRE (automatic read reallocation enabled)
− TB (transfer block)
− EER (enable early recovery)
− PER (post error)
− DTE (disable transfer on error)
− DCR (disable correction)
− Number of retries during read (See Table 6.7)
− Number of retries during write (See Table 6.7)
b. Verify Error Recovery Parameters (Page Code = 7)
− EER (enable early recovery)
− PER (post error)
− DTE (disable transfer on error)
− DCR (disable correction)
− Number of retries during verify (See Table 6.7)
c. Additional Error Recovery Parameters (Page Code = 21)
− Number of retries during seek error (See Table 6.7)
Table 6.7 Disk drive errors and number of retries
Item Type of Error Number of Tries Specification [Default value]
1 Seek Error Number of Retries during a Seek Error [15]
2 Data field Read Error of
Data field
Number of Retries during Read or [63]
Number of Retries during Verify
3 Data field Write Error Number of Retries during Write [63]
Remark:
The number of retries is calculated single logical sector processing units, except
in the following cases.
• The number of retries is calculated as individual retries.