Partitioned data sets

Use the partitioned data set values to specify settings for newly created partitioned data sets (PDS) and newly created partitioned data set extended (PDSE).

Directory Blocks

The directory blocks value is used only for creating a PDS. The PDS contains a directory used as an index to locate members in the PDS. The directory is a set of 256-byte directory blocks. Each directory block contains pointers for 3 - 21 PDS members. If you expect to have 10 members in a PDS, you may want to specify 3 directory blocks, although 1 directory block may be sufficient.

The directory blocks value can be obtained from an SMS data class or you can enter a value.

If you did not specify an SMS data class on the first wizard panel, you are required to enter a directory blocks value; the default is 27.

If you did specify an SMS data class set on the first wizard panel, then the directory blocks value will be obtained from the SMS data class. You can choose to override the obtained value, by selecting "Use this value:" and entering the number of directory blocks.

Data set name type

When creating a partitioned data set, indicate whether it should be created as a partitioned data set (PDS) or as a partitioned data set extended (PDSE).

The PDS or PDSE decision will be obtained from an SMS data class if you do not indicate which to create.

If you did not specify an SMS data class on the first wizard panel, you should indicate your PDS or PDSE choice.

If you did specify an SMS data class set on the first wizard panel, then the PDS or PDSE choice is obtained from the SMS data class. You can choose to override the choice by selecting "Use this value:" and selecting your "PDS" or "PDSE" choice.