IMS Image Copy Extensions Modernization Guide

IMS Image Copy Extensions provided compression of IMS database image copies and other features such as checking database pointers during image copy, placing multiple image copy datasets on a single tape volume, and database group processing.

IMS Image Copy Extensions was a tool designed to enhance the image copy process for IMS databases. It was not a complete system or application, but rather a utility to improve backup and recovery operations.

Organizations using IMS databases on z/OS systems, particularly those with large databases and a need for efficient backup and recovery processes, could have benefited from IMS Image Copy Extensions.

Companies should have considered using IMS Image Copy Extensions when they needed to optimize their IMS database backup and recovery procedures, reduce storage space for image copies through compression, and improve the overall efficiency of their data management processes.

Alternatives to IMS Image Copy Extensions include IMS High Performance Image Copy, which eventually incorporated its features, and other third-party backup and recovery tools designed for IMS databases on z/OS.

IMS Image Copy Extensions required an existing IMS database environment running on z/OS. It extended the functionality of the standard IMS image copy utility.

As a z/OS-based tool, IMS Image Copy Extensions ran within an LPAR on a mainframe system. It was dependent on the z/OS operating system and the IMS subsystem.

IMS Image Copy Extensions enhanced the standard IMS image copy utility by adding features like compression and improved dataset management. It was not a standalone product but rather an extension of existing IMS functionality.

The tool required access to the IMS control region and the databases being backed up. It also needed sufficient storage space for the image copy datasets, whether on tape or disk.

Using IMS Image Copy Extensions provided benefits such as reduced storage costs through compression of image copies, faster backup times due to more efficient data handling, and improved disaster recovery capabilities with enhanced image copy management.

Without IMS Image Copy Extensions, organizations might have faced higher storage costs for image copies, longer backup windows, and less efficient management of their IMS database backups.

The features of IMS Image Copy Extensions were eventually integrated into IMS High Performance Image Copy, providing a more comprehensive solution for IMS database backup and recovery.

IMS Image Copy Extensions leveraged the security features of z/OS and IMS. Access to the image copy datasets was controlled through standard z/OS security mechanisms.

The access control model relied on z/OS Resource Access Control Facility (RACF) or equivalent security systems to manage user access and permissions to the image copy datasets.

Encryption of image copy datasets could be implemented using z/OS encryption facilities. This would protect the data both in transit and at rest.

Deployment of IMS Image Copy Extensions typically involved installing the tool on the z/OS system and configuring it to work with the existing IMS environment. This required technical expertise in both z/OS and IMS.

Ongoing operational requirements included monitoring the image copy jobs, managing storage space for the image copy datasets, and ensuring the integrity of the backups. Skilled personnel were needed to handle these tasks.

Common implementation challenges included ensuring compatibility with the existing IMS environment, configuring the tool correctly to achieve optimal performance, and managing the storage space required for the image copies.