z/VM: CP Commands and Utilities Reference - z/VM - IBM

DASD Tape
3390 3480
FB-512 3490
Notes:
3590
Tape
1. DDR does not provide 7-track support for any tape devices.
2. Specify 3380 for a 3390 that is in 3380 track compatibility mode. Specify
3390 for any 3390 operating in native mode.
3. Any fixed-block device may generically be specified by typing “FB-512”
(minimum abbreviation is “FB”).
4. The DDR utility, executing in a virtual machine, uses I/O DIAGNOSE X'A8'
to perform I/O operations on tape and DASD. DDR under CMS requires that
the device type entered agree with the device type of the real device as
recognized by z/VM. If there is a conflict with device types, the following
message is issued:
HCP708E INVALID INPUT OR OUTPUT DEFINITION
5. If you enter a specific device type on the INPUT or OUTPUT statement that
does not match the actual type of the device that the statement is
identifying, then DDR issues the following message:
HCP708E INVALID INPUT OR OUTPUT DEFINITION
volid
the volume identifier of the disk originally dumped to tape. If the keyword
SCRATCH is specified instead of the volume identifier, no label verification is
performed.
altape
the address of an alternate tape drive. The alternate tape address is only used
when a DUMP command reaches the end of the tape, or a read operation
reaches the END-OF-VOLUME marker placed at the end of the tape during a
DUMP operation.
Note: If multiple reels of tape are required and altape is not specified, DDR
types the following at the end of the reel:
END OF VOLUME CYL xxxxxxxx HD xx, MOUNT NEXT TAPE
or
END OF VOLUME BLOCK xxxxxx, MOUNT NEXT TAPE
After the new tape is mounted, DDR continues automatically.
SKip nn
SKip 0
forward spaces nn files on the tape, nn is any number up to 255. (See note 6
on page 1800) The SKIP option is reset to zero after the tape has been
positioned. The zero value is the default.
MOde nnnn
selects the recording format in which data will be written on the tape. On 3422
tape devices, you can specify the recording format (the MODE) only at the
beginning of a tape volume. No changes in the format can be made after this
DDR
Chapter 3. CP Utilities 1799