OUTDDNAME


                     .-,---.      
                     V     |      
>>-+-OUTDDname-+--(----ddn-+--)--------------------------------><
   '-ODD-------'

ddn: Specifies the name of the DD statement that identifies the (output) dump data set. This data set can be on a tape or a DASD volume. Up to 255 ddnames can be specified; that is, up to 255 dump copies can be made.

Note:

The default block size for output records that are written to tape is determined by obtaining the optimum block size for the device. The maximum is 262 144. You can change this default to 32 760 bytes by using the installation options exit routine
The default block size for output records written to DASD is the track length for devices whose track length is less than 32KB (KB equals 1 024 bytes), or one-half the track length for devices whose track length is greater than 32KB.
If the DCB keyword BLKSIZE is specified on the DD statement for tape, it must be in the range of 7 892 through 262 144. If the DCB keyword BLKSIZE is specified on the DD statement for DASD, it must be in the range of 7 892 through 32 760.
The COPYDUMP command cannot change the block size of the DFSMSdss dump data set. If you intend to copy the dump data set to a DASD device, you must ensure that the block size will be small enough to fit on the target device. ATTENTION: COPYDUMP is the only supported method for copying DFSMSdss dump data sets. Using a copy produced by any other method or utility as input to a RESTORE operation can produce unpredictable results.
If the DCB keyword RECFM is specified on the DD statement, it must have a value of "U".
If the DCB keyword LRECL is specified on the DD statement, it must have a value of "0" (zero).
The output data set must be a standard format sequential data set and cannot use any extended-format features, such as compression.
When creating multiple dump copies in one step, DFSMSdss uses the largest 'common' block size that the output DDs can handle, regardless of the block size determined at open time. For example, if an output dump data set is opened with a block size of 65520 and a second output dump data set is opened with a block size of 262144, DFSMSdss writes at most 65520 bytes of data in a block to each output dump data set.

For more information about the installation options exit routine, see z/OS DFSMS Installation Exits.