International Business Machines Corporation

Thomas W Bish

Joseph M Swingler

Gregory E McBride

Richard Albert Welp

Jonathan Wayne Peake

David C Reed

Nikhil Khandelwal

Mark Albert Reid

Gregory Tad Kishi

Rufus-John Yeisuke Twito

Joseph W Dain

Kenneth Wayne Boyd

Erika Dawson

Takeshi Nohta

Ralph Thomas Beeston

Gary Anna

Aaron S Palazzolo

Hiroshi Araki

Norie Iwasaki

Hiroyuki Miyoshi

Satoshi Takai

Michael Wayne Young

Michael William Wood

Igor I Ageyev

Kimberly A Bortz

Daniel James Winarski

Clea Anne Zolotow

Kenneth Fairclough Day, Iii

Douglas William Dewey

John Valentine Delaney

Bernhard Julius Klingenberg

Katsuyoshi Katori

David Michael Morton

Lyn Lequam Ashton

Stanley Mark Kissinger

Thirumale N Niranjan

Yun Mou

Henry Zheng Liu

Dean Lee Hanson

Petra Kopp

Jonathan Wayner Peake

Takshi Nohta

Provided are a computer program product, system, and method for determining an optimal storage environment for data sets and for migrating data sets. Metadata for each application indicates storage pools used by the application to store data sets, wherein each storage pool is configured in one of a plurality of storage environments using different organization schemes to store data sets. The metadata for at least one application indicates storage pools to store the data sets for the application that are allocated from different storage environments. The metadata for an application is processed to determine a data set for the application stored in a first storage pool implemented in a first storage environment that should be stored in a second storage environment. The determined data set from the first storage pool to a second storage pool implemented in the second storage environment.

Determining an optimal storage environment for data sets and for migrating data sets

A mechanism is provided in a data processing system for asynchronous replication in a hierarchical storage management integrated storage system. For a given file to be replicated from a primary storage system to a remote storage system, the primary storage system accesses the remote storage system to determine file existence and migration status at the remote storage system for the given file. Responsive to the primary storage system determining that the given file exists and has been migrated from first tier storage to second tier storage at the remote storage system, the primary storage system determines a first performance penalty for file recall and a second performance penalty for sending excess data from the primary storage system to the remote storage system. Responsive to the primary storage system determining that the first performance penalty is greater than the second performance penalty, the primary storage system sends whole file data for the given file to the remote storage system to replicate the given file at the remote storage system.

Improving performance of asynchronous replication in HSM integrated storage systems

An incremental backup system that performs the following (not necessarily in the following order): (i) making a plurality of time-ordered journal entries; (ii) determining that a corruption condition exists; (iii) responsive to a corruption condition, constructing a first incremental mirror data set that reflects a backup data set and all journal entries up to a first corrupted journal entry which is the earliest in time journal entry, of the plurality of journal entries, that is a corrupted journal entry; (iv) responsive to a corruption condition, constructing a second incremental mirror data set that reflects the backup data set and all journal entries up to the first corrupted journal entry; and (v) checking for corruption in the first and second incremental mirror data sets to determine the latest uncorrupted version of the data set.

File corruption recovery in concurrent data protection

A computer-implemented method, according to one embodiment, includes: determining, using a processor, whether a virtual machine is authorized to run using a data structure having metadata about properties of the virtual machine; determining, using the processor, whether a hypervisor is authorized to run the virtual machine using a digital signature of the data structure; and running the virtual machine on a computer system using the hypervisor in response to determining that the virtual machine is authorized to be run and that the hypervisor is authorized to run the virtual machine. Other systems, methods, and computer program products are described in additional embodiments.

Hypervisor and virtual machine protection

An apparatus for providing traffic alerts includes a distance module, analysis module, transmission module, and signaling module. The distance module measures the distance between a vehicle and an object in front of the vehicle. The analysis decides whether to signal a presence of the object that comprises determining that the measured distance is equal to or less than a threshold distance. The transmission module transmits an alert in response to the analysis module deciding to signal a presence of the object. The signaling module transmits a visual signal to one or more vehicles behind the vehicle in response to receiving the alert from the transmission module. The visual signal has one or more characteristics.

Traffic safety alert system

Cluster families for cluster selection and cooperative replication are created. The clusters are grouped into family members of a cluster family base on their relationships and roles. Members of the cluster family determine which family member is in the best position to obtain replicated information and become cumulatively consistent within their cluster family. Once the cluster family becomes cumulatively consistent, the data is shared within the cluster family so that all copies within the cluster family are consistent.

Cluster families for cluster selection and cooperative replication

Disclosed aspects include management of a set of blocks in a storage system. A set of write requests is initiated to the set of blocks. In response to the set of write requests, a set of expiration metadata for the set of blocks is established. Based on the set of expiration metadata, an expiration event is detected. In response to detecting the expiration event, an expiration operation on the set of blocks is processed.

Managing a set of blocks in a storage system

A computer-implemented method, according to one embodiment, includes receiving a request for a hypervisor to run a virtual machine; determining, using a processor, whether the virtual machine is authorized to run using a data structure having metadata about properties of the virtual machine; determining, using the processor, whether the hypervisor is authorized to run the virtual machine using a digital signature of the data structure; and running the virtual machine on a computer system using the hypervisor in response to determining that the virtual machine is authorized to be run and that the hypervisor is authorized to run the virtual machine. Other systems, methods, and computer program products are described in additional embodiments.

Performance of asynchronous replication in HSM integrated storage systems

A method for releasing storage space in a space-efficient volume is disclosed. In one embodiment, such a method includes maintaining, for a space-efficient volume, a bitmap comprising a bit for each track in the space-efficient volume. A host system indicates whether a track is one of used and unused by marking the corresponding bit in the bitmap. A storage controller reads the bitmap and frees tracks from the space-efficient volume that the bitmap indicates are unused. In certain embodiments, the bitmap is stored on the space-efficient volume. For example, the bitmap may be appended to a volume table of contents (VTOC) stored on the space-efficient volume. A corresponding system and computer program product are also disclosed.

Coordinated space reclamation in space-efficient flashcopy volumes

Growing community of inventors

Tucson, AZ, United States of America

Thomas W Bish