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

v Flagged tracks are treated just as any other track for all 2314 and 2319
devices—that is, no attempt is made to substitute the alternate track data when a
defective primary track is read. In addition, tracks are not inspected to determine
whether they were previously flagged when written. Therefore, volumes
containing flagged tracks should be restored to the same cylinders of the volume
from which they were dumped. The message HCP715E occurs each time a
defective track is dumped, copied, or restored, and the operation continues.
v A minidisk that has extended into the alternate track cylinder must be moved
either to another area of the disk, or to another disk entirely. Use the REORDER
option to copy or restore a minidisk to another area.
v The FTR option can be used with the COMPACT option; however, DDR ignores
the FTR option. This happens because when data compaction is requested, DDR
defaults to using full-track-read if possible, and the tape record formats for the
default are the same as those generated by FTR.
v For DASDs other than the 3380 and 3390 that support the full track read (FTR)
processing, the option must be specified. Otherwise, the tape is produced in the
current DDR format of 4096 blocks.
v Tapes created by the DDR DUMP function in compact or LZcompact format
cannot be used as input to earlier levels of DDR that do not support the same
format.
v If performing a DDR COPY from a device with a cylinder-based allocation record
to a device with an extent-based allocation record, or vice versa, and if you plan
on attaching the output DASD to the system as a CP volume, the output DASD
should be reallocated by issuing the ICKDSF CPVOLUME ALLOCATE command.
If the output DASD contains a cylinder-based allocation map when it should
contain an extent-based allocation map, ICKDSF will convert the cylinder-based
map into an extent-based map during the reallocation. Likewise, if the output
DASD contains an extent-based allocation map when it should have a
cylinder-based allocation map, ICKDSF will convert the extent-based map into a
cylinder-based map during the reallocation.
Example 1
input 191 3390 sysres
output 180 3490 181
dump all
input 130 3390 mini01
dump 1 to 50 reorder 51
dump 60 70 101
This example dumps all data from the volume labeled SYSRES onto the tape
mounted on unit 180. If the program runs out of space on the first tape, it continues
dumping onto the alternate device (181). A map of the dumped cylinders is printed
on unit 00E while the program is dumping. When the first function is complete, the
volume labeled MINI01 is dumped onto a new tape. Its cylinder header records are
labeled 51 to 100. A map of the dumped cylinders is printed on unit 00E. Next,
cylinders 60 to 70 are dumped and labeled 101 to 111. This extent is added to the
cylinder map on unit 00E. When the DDR processing is complete, the tapes are
unloaded, and the program stops.
Example 2
input 182 3490
output 250 fb-512 systst
restore 10 to 20 reorder 30
DDR
Chapter 3. CP Utilities 1807