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Status Not under consideration
Categories z/TPF
Created by Guest
Created on Oct 29, 2013

GDS 64K cylinder restriction

With GDS support you are limited to 64K cylinders (2 byte field) per dataset. This maxes out at a 46G file. This restriction needs to be lifted due to increasing file size.

Idea priority Medium
  • Guest
    Reply
    |
    Dec 4, 2015

    This request is to support more than 64K cylinders for a GDS or VSAM dataset. The dataset would span multiple DASD volumes, but each DASD volume would be 64K cylinders or less. This request is not asking for a change to the current 64K cylinder limit for a single DASD volume. This has been tested successfully and no changes to IBM product code are required.

  • Guest
    Reply
    |
    Oct 14, 2015

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - Servers and Systems Software
    Product family - z Systems Software
    Product - z/TPF

    For recording keeping, the previous attributes were:
    Brand - WebSphere
    Product family - Transaction Processing
    Product - z/TPF

  • Guest
    Reply
    |
    Jan 13, 2014

    Due to processing by IBM, this request was reassigned to have the following updated attributes:
    Brand - WebSphere
    Product family - Transaction Processing
    Product - z/TPF
    Component - z/TPF

    For recording keeping, the previous attributes were:
    Brand - WebSphere
    Product family - Transaction Processing
    Product - z/TPF
    Component - Runtime