Manuals & Documents
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This document describes DLm and how to use it.
Updated: April 15, 2026
This guide describes DLm and how to use it.
Updated: November 20, 2024
This book provides an overview of the Disk Library for mainframe (DLm) Command Processors, command processor procedures, troubleshooting command processors, and the DLm utilities for the z/OS environment.
Updated: November 20, 2024
This guide describes how to use the GDDR Tape solution with the DLMAUT software for disaster recovery on DLm8500 and DLm8700 systems with Data Domain, Isilon, and PowerScale backend storage systems. The guide applies to DLm 5.5.x and DLm 7.x systems.
Updated: February 04, 2025
This release notes document provides information about upgrading to this release of DLm: What's new, what's resolved, and any known issues and their workarounds.
Updated: August 06, 2026
Site planning and preparation are vital to a successful DLm deployment. Considerations include environmental variables, floor load-bearing capacities, bay positioning and power cabling and connectors.
Updated: June 30, 2026
This document describes the hardware components that are currently supported by Disk Library for Mainframe.
Updated: January 22, 2026
This guide describes the contents of the DLm 2.7.0.1 Mainframe Utilities package.
Updated: October 29, 2025
This document provides Disk Library for mainframe troubleshooting information. For each message issued by DLm, an explanation of the message cause and recommended user action is provided.
Updated: November 20, 2024
This document provides an overview of the Statement of Volatility for the Disk Library for mainframe version 7.0.1.0, detailing both non-volatile and volatile memory aspects.
Updated: November 20, 2024