Spectra Logic Spectra S50 User Manual page 117

Table B-1: Extended Copy Command (SPC2 Specifications)
Bit
Byte 7
0
1
2
3
4
5
6
7
8
9
10 (MSB)
13
14
15
Before the copy manager is instructed to move data, the application controlling the
data movement will independently execute any activities necessary to prepare the
devices for the EXTENDED COPY command; these activities include media changer
commands, loading media, MODE SELECT commands, positioning media, etc. After all
preparatory actions have been accomplished, the EXTENDED COPY command can be issued
to the copy manager to start the data transfer.
The Parameter List Length field specifies the length in bytes of the parameter data that
will be contained in the Data-Out Buffer. A Parameter List Length of zero indicates that
no data will be transferred; this condition will not be considered as an error. If the
copy manager detects a Parameter List Length that exceeds the maximum length
specified by the Maximum Descriptor List Length in the Mode Sense page 0Eh, the
command terminates with a CHECK CONDITION; the sense key is set to ILLEGAL REQUEST, and the
ASC and ASCQ indicate PARAMETER LIST LENGTH TOO LONG.
The EXTENDED COPY Parameter List (Table B-2 on page 118) begins with a 16-byte header
that contains the List Identifier field, the STR and NRCR bits, the command's priority,
the length of the target descriptor list, the length of the segment descriptor list, and the
length of the optional inline data. Immediately following the header is one or more
Appendix B. Extended Copy—83h—SPC2 Specifications
6 5 4
Operation Code 83h
Parameter List Length
117
3 2
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Control
1 0
(LSB)