Verifying allocation parameters

You can type over any of the fields to customize your cluster attributes. A second screen of attributes is available by specifying a value of YES in the "Extended allocate" field located at the bottom of the screen.

Allocate New VSAM Cluster Screen

image2021-6-16_10-43-20.png

Steps:

  1. Verify that the value in the "Extended allocate" field is Y. If it is not, type Y in the field.
  2. Press Enter. Since you specified a value of Y (Yes) in the Extended allocate field, File-AID displays an additional allocation attributes screen as shown in Allocate VSAM Cluster Screen (continued).

Important

The value displayed in the Volume serial field will not be the same value shown in this example. The value you see is unique to your installation and is the same as the model data set (FASAMP.EMPLOYEE).

More about VSAM allocation

  • Use an OWNER ID of $IAM to identify the data set as an IAM data set.
  • For variable length records, "Maximum Recordsize" must be larger than "Average Recordsize", but not larger than the "Data C/I size".

 

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