SCSI Primary Commands - 2.pdf

18 July 2001 T10/1236-D Revision 20manager supports the 0Eh descriptor type code it also shall support the RECEIVE COPY RESULTS commandwith RECEIVE DATA service action.The CAT bit is described in 7.2.7.2.The DESCRIPTOR LENGTH field shall contain 16 (0010h). The SOURCE TARGET DESCRIPTOR INDEX and DESTINATIONTARGET DESCRIPTOR INDEX fields are described in 7.2.7.1.The SOURCE STREAM DEVICE TRANSFER LENGTH field specifies the amount of data to be read from the source streamdevice on each read operation. See 7.2.6.8 for a description of how data in the SOURCE STREAM DEVICE TRANSFERLENGTH field in the segment descriptor interacts with data in the STREAM BLOCK LENGTH field in the device typespecific target descriptor parameters for the source sequential-access device type.The DESTINATION STREAM DEVICE TRANSFER LENGTH field specifies the amount of data to be written to the destinationstream device on each write operation. See 7.2.6.8 for a description of how data in the DESTINATION STREAM DEVICETRANSFER LENGTH field in the segment descriptor interacts with data in the STREAM BLOCK LENGTH field in the devicetype specific target descriptor parameters for the destination sequential-access device type.The BYTE COUNT field specifies the number of bytes that shall be processed for this segment descriptor. A value ofzero shall not be considered as an error, and shall specify that no source blocks shall be read and no source datashall be processed. However, a value of zero shall specify that any residual destination data from a previoussegment shall be written if possible to the destination in whole-block transfers, and any residual data shall behandled as described in 7.2.7.2.dpANS SCSI Primary Commands - 2 (SPC-2) 67