International Business Machines Corporation

James B Cammarata

Harry M Yudenfriend

Matthew J Kalos

Peter Grimm Sutton

Richard Anthony Ripberger

John Glenn Thompson

Wayne Erwin Rhoten

Dale Francis Riedy, Jr

Scott Brady Compton

Gavin Stuart Johnson

Glenn Randle Wilcock

Michael Koester

Shannon Lyn Gallaher

Craig Donald Norberg

Kenneth Michael Kapulka

Marc Kenneth Duquette

Michelle Parks Dais, Legal Representative

Josephine M Edwards, Legal Representative

Provided are a computer program product, system and method for data storage volume record management for application-level recovery in accordance with the present description. In one embodiment, logical volume movement is addressed when performing enterprise application recovery. In one embodiment, a host-based recovery product in accordance with the present description, can detect logical volume movement from one physical device to another and proactively prevent application level recovery that potentially may result in data loss. In one embodiment, a time-based capturing of pairings of logical and physical volume identifiers or descriptors within storage configuration records and sub-records are used to surgically recover volumes of an application from enterprise level protection copy of physical media. This history of pairings facilitates many types of logical volume to physical media remapping, such as the regular migration of data to replacement storage controllers which can occur at various times.

Data storage volume record management for application-level recovery

A method, system and computer-program product for re-initializing a storage volume with an previously created volume map being preserved to allow access to previously stored data sets. The invention includes creating a new volume map in an unused volume area where the new volume map has pointers to new data sets. One of the new data sets contains the previously created volume map that points to previously created data sets. Each volume map is referenced by a volume label and includes a VTOC and an optional VTOC index. The pointers in the VTOC are data set control block (DSCB) records.

Preserving an existing volume map in re-initializing a data storage volume

Provided are a system and article of manufacture for providing an address format compatible with different addressing formats used for addressing different sized address spaces. An address format is used in an operating system to address storage space in a storage device comprising a first region and a second region of storage space. A first group of applications uses the address format to only address the storage space in the first region and is not coded to use the address format to access the second region and a second group of applications uses the address format to address the storage space in the first and second regions.

System and article of manufacture for providing an address format compatible with different addressing formats used for addressing different sized address spaces

A host implement a method for controlling a dynamic transition of the host from a current operation mode to a target operation mode. The method involves the host receiving an operation mode transition request to transition a logical representation of a storage subsystem as maintained by the host from the current operation mode to the target operation mode, and the host reconfiguring the logical representation of the storage subsystem to the target operation mode based on the operation mode transition request exclusive of a re-IPLing of an operating system of the host.

Dynamic operation mode transition of a storage subsystem

Provided is a method, system, and article of manufacture for providing an address format compatible with different addressing formats used for addressing different sized address spaces. An address format is used in an operating system to address storage space in a storage device comprising a first region and a second region of storage space. A first group of applications uses the address format to only address the storage space in the first region and is not coded to use the address format to access the second region and a second group of applications uses the address format to address the storage space in the first and second regions.

Method for providing an address format compatible with different addressing formats used for addressing different sized address spaces

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LaGrange Park, IL, United States of America

James B Cammarata