HP Surestore 28/48-Slot with DLT7000 Digital Linear Tape SCSI-2 Drive and SCSI - Page 164

Library SCSI-3 Command Set Log Select Command (4CH) Log Select Command (4CH) Table 2-99 The LOG SELECT command (Table 2-99) allows an application client to manage statistical information maintained by the device about the device or its logical units. Device servers that implement the LOG SELECT command shall also implement the LOG SENSE command. Log Select Command CDB Byte 7 6 5 4 3 2 1 0 0 Operation Code (4CH) 1 Reserved (0) PCR (0) SP (1) 2 PC (01) Reserved (0) 3-6 Reserved (0) 7 Parameter List Length (MSByte) 8 Parameter List Length (LSByte) 9 Control Byte (0) PCR = 0 A Parameter Code Reset (PCR) bit of one and a parameter list length of 0 shall cause all implemented parameters to be set to the target-defined default values (e.g., 0). If the PCR bit is one and the parameter list length is greater than 0, the command shall be terminated with CHECK CONDITION status. A PCR bit of 0 specifies that the log parameters shall not be reset. SP = 1 A Save Parameters (SP) bit of one indicates that after performing the specified LOG SELECT operation, the target shall save to non-volatile memory. A SP bit of 0 specifies that parameters shall not be saved. 2- 120 Chapter 2