User manual TANDBERG SLR7-140 PROGRAMMER

[. . . ] TANDBERG SLR Tandberg SLR7, SLR50, SLR60, SLR75, SLR100, SLR140 SCSI INTERFACE FUNCTIONAL SPECIFICATION TANDBERG DATA ASA P. O. Box 134 Kjelsås N-0411 OSLO, NORWAY Phone + 47 22 18 90 90 Telefax + 47 22 18 95 50 © Tandberg Data ASA Part No. October 43 07 43 ­ 13 2003 Related publications available from Tandberg Data ASA: Part No. 43 04 44 - 11 Title Tandberg SLR7, SLR50, SLR60, SLR75, SLR100, SLR140 Reference Manual This publication may describe designs for which patents are granted or pending. [. . . ] When a block is re-written (one or more times), the counter is incremented by one. The increment(s) are performed each time capstan motor stops. 13-8 Tandberg SLR Product Line SCSI Functional Specifications Tandberg Data Log Sense Total Write Errors Log Parameters BYTE n+0 n+1 n+2 n+3 n+4 n+7 DU DS TSD ETC TMC R LP Parameter Length = 04h Write Errors Counter BIT 7 6 5 4 3 2 1 0 Parameter Code = 0002h Table 13-8: Total Write Errors Log Parameters Parameter Code DU The Parameter Code is set to 0002h. A Disable Update (DU) bit set to 0 indicates that the Drive is free to update the counter. A DU bit set to 1 indicates that the Drive shall not update the counter except in response to a LOG SELECT command that specifies a new value for the counter. The initiator may use the LOG SELECT command to set or clear the DU bit. The Drive will set the DU bit to 1 when the counter reaches its maximum value (FFFFFFFFh). DS The Disable Save (DS) bit is set to 1 to indicate that the Drive does not support saving of this log parameter. (Note: This bit can not be changed by the initiator) TSD The Target Save Disable (TSD) bit is set to 1 to indicate that the Drive does not provide any Drivedefined method for saving this log parameter. (Note: This bit can not be changed by the initiator) ETC An Enable Threshold Comparison (ETC) bit indicates whether comparison to the threshold value is performed or not. TMC The Threshold Met Criteria (TMC) field is valid only if ETC bit is 1 and it selects one of four possible Threshold Met Criteria. LP The List Parameters (LP) bit is set to 0 to indicate that the parameter is a data counter. (Note: This bit can not be changed by the initiator) Parameter Length Write Errors Counter This field is set to 04h to indicate that the counter is 4 bytes wide. This counter counts re-writes and uncorrectable write errors during write operations. The increment(s) are performed each time capstan motor stops. 13-9 Tandberg SLR Product Line SCSI Functional Specifications Tandberg Data Log Sense Total Write Errors Corrected Log Parameters BYTE n+0 n+1 n+2 n+3 n+4 n+7 DU DS TSD ETC TMC R LP Parameter Length = 04h Write Errors Corrected Counter BIT 7 6 5 4 3 2 1 0 Parameter Code = 0003h Table 13-9: Total Write Errors Corrected Log Parameters Parameter Code DU The Parameter Code is set to 0003h. A Disable Update (DU) bit set to 0 indicates that the Drive is free to update the counter. A DU bit set to 1 indicates that the Drive shall not update the counter except in response to a LOG SELECT command that specifies a new value for the counter. The initiator may use the LOG SELECT command to set or clear the DU bit. The Drive will set the DU bit to 1 when the counter reaches its maximum value (FFFFFFFFh). DS The Disable Save (DS) bit is set to 1 to indicate that the Drive does not support saving of this log parameter. (Note: This bit can not be changed by the initiator) TSD The Target Save Disable (TSD) bit is set to 1 to indicate that the Drive does not provide any Drivedefined method for saving this log parameter. (Note: This bit can not be changed by the initiator) ETC An Enable Threshold Comparison (ETC) bit indicates whether comparison to the threshold value is performed or not. TMC The Threshold Met Criteria (TMC) field is valid only if ETC bit is 1 and it selects one of four possible Threshold Met Criteria. [. . . ] If another WRITE FILEMARKS command is received by the Drive while the tape is positioned after LEW (but before end of partition), the Drive will transfer and write all requested data if possible. The WRITE FILEMARKS command will then be terminated with CHECK CONDITION (this will be true even if the requested Number of Tapemarks is zero). If all tapemarks were successfully written to the tape the Error Code will be set to END-OF-PARTITION DETECTED ON WRITE, LEW PASSED. The Information Bytes will be set to zero. 32-3 Tandberg SLR Product Line SCSI Functional Specifications Tandberg Data Write Filemarks 32. 5. 5. End of Partition If end of partition is reached during the execution of a WRITE FILEMARKS command, the Drive will terminate the command with CHECK CONDITION status. [. . . ]