Optical Drive and Library SCSI-2 Command Reference
SCSI-2 Drive Command Set
Mode Select Command (15H)
Chapter 2 2-35
SCSI-2 Drive Commands
PER  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.
DTE    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.
DCR  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.
Read Retry
Count   The Read Retry Count field specifies the number of 
times the target attempts recovery of a read operation 
before reporting an error.
Write Retry
Count  The Write Retry Count field specifies the number of 
times the target attempts recovery of a write operation 
before reporting an error.










