HP Surestore 160fx Optical Drive and Library SCSI-2 Command Reference - Page 72
Read Retry, Count, Write Retry, for data error recovery.
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SCSI-2 Drive Commands SCSI-2 Drive Command Set Mode Select Command (15H) PER DTE DCR Read Retry Count Write Retry Count A Post Error bit of 1 indicates that the target reports recovered errors. A PER bit of 0 indicates that the target does not report recovered errors. A Disable Transfer on Error bit of 1 indicates that the target terminates the data phase upon detection of a recovered error. A DTE bit of 0 indicates that the target does not terminate the data phase upon detection of a recovered error. A Disable Correction bit of 1 indicates that error correction codes are not used for data error recovery. A DCR bit of 0 allows the use of error correction codes for data error recovery. The Read Retry Count field specifies the number of times the target attempts recovery of a read operation before reporting an error. The Write Retry Count field specifies the number of times the target attempts recovery of a write operation before reporting an error. Chapter 2 2-35