Data Sets › Allocate › Allocate a New VSAM Data Set

Allocate a New VSAM Data Set

Use the Allocate New VSAM Data Set wizard to create a new VSAM 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 the fields in the Component DSNs section to define the data set name, location, and file type.
4. Select and complete one of the following sections:
   • Volume—Complete the Data and Index fields to specify the volume that contains the data component of the VSAM that you are defining.
   • SMS Class—Complete the Storage Class, Data Class, and Management Class fields to define the location and attributes of your new data set.
5. Select options for additional functionalities in the Options section.

   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.

6. Click Next.
7. Define the allocation parameters. Specify the following parameters:

   CI Size

   Control size for the data and index components of the file

   Unit

   Space allocation unit. Select one of the following options:

   TRKS

   Tracks

   CYL

   Cylinders

   REC

   Records

   K

   Kilobytes

   M

   Megabytes

   Primary

   Primary space allocation

   Secondary

   Secondary space allocation

   Key position

   Position of key for VSAM file

   Key length

   Key length for VSAM file

   Avg record size

   Average length of records

   Max record size

   Length of largest record allowed

   Owner ID

   ID of owner associated with file

   Percent free CI and CA

   Amount of empty space allocated in each control interval when file is initially loaded

   Share options crossregion

   Specifies how the file can be shared among regions using Global Resource Serialization. Select one of the following options:

   1

   Unlimited read OR one read/write

   2

   Unlimited read AND one read/write

   3

   Shared fully

   4

   Shared fully and updated/refreshed immediately

   Share options crosssystem

   Specifies how the file can be shared among systems using Global Resource Serialization. Select one of the following options:

   3

   Shared fully

   4

   Shared fully and updated/refreshed immediately

   Buffer Space

   Minimum buffer space allocated when file is accessed

8. Click Finish.

More information:

Allocate

Allocate a New PDS

Allocate a New Sequential Data Set

Add Multiple Volumes

Select a Data Set

Add Multiple Volumes

Select a Member