Using PDSs

Some of the limitations of using PDSs are as follows:

PDSs must be compressed periodically using the IEBCOPY utility.
- Space used by PDS members that are replaced or deleted cannot be reused until the data set is compressed. The more you update a PDS, the more you need to compress it.
- For more information on IEBCOPY, see z/OS DFSMSdfp Utilities.
You can only create PDS members if the PDS already exists. If it does not exist, a PDSE and PDSE member will be created instead.
PDS members do not support their own DDM attributes, so DDM default attributes are assumed.