Allocate a New Sequential Data Set

Use the Allocate New Sequential Data Set wizard to create a new sequential data set.

Follow these steps:

1. Select Add to Directory List view if you want the new data set displayed in your Directory List view.
2. Complete the Model Data Set Name field if you want your new data set to copy the properties of another data set.
   1. Enter the name of a data set that exists on the server.
   2. Click Confirm.
3. Complete one of the following sections:
   • SMS Data Set—Complete the fields in this section to define the location and attributes of your new data set.
     • Management Class

       Specifies the name of the SMS management class that controls data set backup, retention, and migration services

     • Storage Class

       Specifies the name of the SMS storage class associated with the data set that controls the volume where the data set is stored

     • Data Class

       Specifies the name of the SMS data class that defines the allocation defaults for the data set

   • Use Non-SMS—Select this option and complete one of the following fields for the data set you are allocating.
     • Volume Serial

       Specifies the volume serial.

     • Generic Unit Name

       Specifies the generic unit name for the direct-access volume in which you want the data set stored.

4. Click Next.
5. Specify the data set type. Select one of the following options:
   • SEQ

     Sequential file

   • LARGE

     Large format sequential data set

6. Specify the space allocation unit.
7. Specify the allocation parameters:
   • Primary Allocation

     Specifies the amount of space allocated in each primary allocation that contains the specified number of tracks, cylinders, or blocks

   • Secondary Allocation

     Specifies the amount of space allocated in each secondary allocation that contains the specified number of tracks, cylinders, or blocks

   • Record Format

     Specifies the format of the record.

   • Record Length

     Specifies the logical record length allocated for records stored in the data set

   • Block Size

     Specifies the size allocated for variable blocked or fixed blocked files

     Note: Select Use optimal value to allow the system to calculate the optimum block size.

   • Multiple Volumes

     Specifies that the new data set contains multiple volumes.

     Note: If you select Multiple Volumes, click Edit to open the Add Multiple Volumes dialog. For more information on the Add Multiple Volumes dialog, see Add Multiple Volumes.

8. Click Finish.