International Business Machines Corporation

Mark Allan Norman

Gregory Tad Kishi

Laura Jean Ostasiewski

Christopher Michael Sansone

Jonathan Wayne Peake

Wayne Charles Carlson

Kevin Lee Gibble

Cheryl Marie Friauf

William Henry Travis

Keith Anthony Bello

Benjamin L Andrews

A method and computer program product are provided to ensure a timely secure data erase by comparing a number of secure data erase operations in a queue to a maximum queued threshold, the secure data erase operations corresponding to physical volumes to be secure data erased. In response to determining that the number of secure data erase operations in the queue is greater than the threshold, an average time to a secure data erase deadline is determined. The average time to the secure data erase deadline is compared to a predefined expiration threshold. In response to determining that the average time to the secure data erase deadline is less than the predefined expiration threshold, at least one additional resource is allocated to perform the queued secure data erase operations for completing the secure data erase operations prior to the secure data erase deadline.

Method for selectively performing a secure data erase to ensure timely erasure

A method and computer program product are provided to ensure a timely secure data erase by determining an erasure deadline for each physical volume of a plurality of physical volumes and calculating a remaining time for each physical volume. The remaining time is calculated for each physical volume by comparing a current date to the erasure deadline of each physical volume respectively. A secure data erase is performed on the plurality of physical volumes in an order based on the calculated remaining time, where the secure data erase is performed on the physical volume with a shortest calculated remaining time first.

A method and computer program product are provided to ensure a timely secure data erase by determining an erasure deadline for each physical volume of a plurality of physical volumes and calculating a remaining time for each physical volume. The remaining time is calculated for each physical volume by comparing a current date to the erasure deadline of each physical volume respectively. The physical volumes may then be sorted based on the remaining time and the physical volume with a shortest calculated remaining time will be selectively secure data erased.

A system is provided to ensure a timely secure data erase by determining an erasure deadline for each physical volume of a plurality of physical volumes and calculating a remaining time for each physical volume. The remaining time is calculated for each physical volume by comparing a current date to the erasure deadline of each physical volume respectively. The physical volumes may then be sorted based on the remaining time and the physical volume with a shortest calculated remaining time will be selectively secure data erased.

System for selectively performing a secure data erase to ensure timely erasure

A method according to one embodiment includes determining whether to reallocate one or more of a plurality of tape drives that are presently allocated for a secure data erase process in response to an evaluation of a quantity of physical volumes to be secure data erased and a minimum queued threshold; and in response to said determination that one or more of said plurality of tape drives is to be reallocated, reallocating the one or more of said plurality of tape drives from the secure data erase process to another function.

Reallocation of tape drive resources associated with a secure data erase process

A method and computer program product are provided to ensure a timely secure data erase by determining whether allocating an additional tape drive would improve secure data erase performance by evaluating a quantity of physical volumes to be secure data erased, a maximum queued threshold, an average time to an erasure deadline and a minimum expiration threshold. An additional tape drive is allocated for the secure data erase process when it is determined that allocating an additional tape drive would improve secure data erase performance.

Method for determining allocation of tape drive resources for a secure data erase process

A system is provided to ensure a timely secure data erase by determining whether allocating an additional tape drive would improve secure data erase performance by evaluating a quantity of physical volumes to be secure data erased, a maximum queued threshold, an average time to an erasure deadline and a minimum expiration threshold. An additional tape drive is allocated for the secure data erase process when it is determined that allocating an additional tape drive would improve secure data erase performance.

System for determining allocation of tape drive resources for a secure data erase process

A virtual tape server for implementing a method for exporting one or more logical volumes contained in a source physical volume pool. The method involves an activation of an export clone pool to clone an identity of the source physical volume pool into the export clone pool based on the logical volumes, an exportation of the export clone pool including the logical volumes subsequent to the activation of the export clone pool, and a deactivation of the export clone pool to purge the identity of the source physical volume pool from the export clone pool subsequent to the exportation of the export clone pool.

Export of logical volumes by pools

Provided are a method, system and article of manufacture for return processing in storage pools. A plurality of physical volumes are allocated to a first storage pool. A determination is made whether the first storage pool has more than a threshold number of empty physical volumes. If the first storage pool has more than the threshold number of empty physical volumes, then at least one empty physical volume is returned to a second storage pool.

Method, system, and article of manufacture for returning empty physical volumes to a storage pool based on a threshold and an elapsed time period

An apparatus, system, and method are disclosed for recalling a logical volume from a mountable media for use in a virtual tape server. The apparatus includes a receiving module, a queuing module, and an optimizer module. The receiving module receives recall requests for logical volumes stored in a mountable media such as a tape cartridge. The queuing module places the requests in a queue to be processed in turn. The optimizer module reorders the queue based on one or more optimization rules in order to process the recall requests more efficiently.

Apparatus, system, and method for optimizing recall of logical volumes in a virtual tape server

A media server (e.g., a virtual tape server) implements a method for a dynamic media format conversion of physical volumes stored within a media library (e.g., a tape library). The method involves a recall of volume data in a media format f as stored in one or more source physical volumes of a source media, and an automatic premigration of the recalled volume data in a media format f to one or more target physical volumes of a target media. The media format f is different in one or more aspects from the media format f.

Dynamic media format conversion of physical volumes

Provided are methods for borrow processing in storage pools. A plurality of physical volumes are allocated to a first storage pool. A determination is made whether the first storage pool has less than a threshold number of empty physical volumes. If the first storage pool has less than the threshold number of empty physical volumes, then at least one empty physical volume is borrowed to the first storage pool from a second storage pool.

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Tucson, AZ, United States of America

Mark Allan Norman