Table B-5: Device Type Specific Parameters In Target Descriptors; Table B-6: World Wide Name Target Descriptor Format - Spectra Logic Spectra S50 User Manual

The value in the Descriptor Type Code field determines the format of the target
descriptor parameters that follow the four-byte header and precede the device type
specific parameters. The values in the Descriptor Type Code field are listed in
Table B-3 on page 122.
The value in the Peripheral Device Type field determines the format of the device type
specific parameters that follow the target descriptor parameters. The device type
specific parameters convey information specific to the type of device identified by the
target descriptor. Table B-5 lists the peripheral device type code values having formats
defined for the device type specific parameters in a target descriptor. Peripheral device
types with code values not listed in Table B-5 are reserved in the EXTENDED COPY
parameter list.

Table B-5: Device Type Specific Parameters in Target Descriptors

Peripheral Device Type
00h, 04h, 05h, 07h, and 0Eh
01h
03h
The copy manager may, prior to processing a segment descriptor, verify the
information in a target descriptor's device specific fields. However, the copy manager
will not issue any commands that change the state of the target device to verify the
information.
World Wide Name Target Descriptor Format
The target descriptor format shown in Table B-6 is used to identify a target using its
World Wide Name.

Table B-6: World Wide Name Target Descriptor Format

Bit
Byte 7
0
1 Reserved
2
3
4 (MSB)
11
12 (MSB)
19
Appendix B. Extended Copy—83h—SPC2 Specifications
Reference
6 5 4
Descriptor Type Code (E0h)
NUL
Logical Unit Number
World Wide Name
Description
Block devices
Sequential access devices
Processor devices
3 2
Peripheral Device Type
Reserved
Reserved
125
Shorthand
Block
Stream or Tape
Stream
1 0
(LSB)
(LSB)