International Business Machines Corporation

Christopher Michael Sansone

Gregory Tad Kishi

Mark Allan Norman

Laura Jean Ostasiewski

Yan Xu

Olga Yiparaki

Dana Fairbairn Scott

Lee Charles LaFrese

Gail Andrea Spear

Richard Anthony Ripberger

Chung Man Fung

Minh-Ngoc Le Huynh

James C Chen

Patricia Ching Lu

Dung Ngoc Dang

James Mathew Davison

Lee Charles La Frese

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

An apparatus, system, and method are disclosed for network authentication and content distribution. The apparatus includes an authentication module configured to receive redirected network requests over a communications network from a firewall module and configured to present a user license agreement and not require user-identifiable information, and a content distribution module configured to synchronize over the communications network with a client module and transmit content to the client module. The system includes a firewall module connected with a global communications network, a network connected with the firewall module, a computing device configured to couple with the network, and the apparatus. The method includes receiving redirected network requests over a communications network from a firewall module, presenting a user license agreement and not requiring user-identifiable information, and synchronizing over the communications network with a client module and transmitting content to the client module.

Apparatus, system, and method for network authentication and content distribution

Host input/output (I/O) operations are performed via a file stored in a non-volatile storage coupled to a storage controller while data structures are being generated in the storage controller to copy data from source logical volumes to target logical volumes. The source logical volumes and the target logical volumes are logical representations of physical storage maintained in a plurality of direct access storage devices. The contents of the file are transferred from the non-volatile storage to one or more of the plurality of direct access storage devices, after the data structures have been generated, wherein the host I/O operations are performed via the file while the contents of the file are being transferred to the one or more of the plurality of direct access storage devices. The host I/O operations to the plurality of direct access storage devices are resumed, in response to transferring entire contents of the file to the one or more of the plurality of direct access storage devices.

Executing host data transfer operations during setup of copy services operations

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 method to store point-in-time data, comprising establishing a block size, providing source data storage comprising (S) blocks, and target data storage comprising (T) blocks. The method configures (B) source storage segments and (B) target storage segments, and receives updated point-in-time data for original point-in-time data written to an (i)th source storage segment. The method then determines if a (j)th target storage segment comprises available storage capacity to store the original point-in-time data. If a (j)th target storage segment comprises available storage capacity to store the original point-in-time data, the method writes the original point-in-time data to that (j)th target storage segment.

Apparatus and method to store original point-in-time data

Provided are techniques for introducing a delay in responding to host write requests. A percentage of fullness of a write cache is determined. Based on the determined percentage of fullness of the write cache (f), a low cache threshold (L), alpha (&#x3b1;), and k, an amount of delay to introduce into responding to a host write request is determined. Techniques wait the amount of the delay before responding to the host write request although the host write request processing has completed.

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Tucson, AZ, United States of America

Christopher Michael Sansone