International Business Machines Corporation

Matthew John Fairhurst

William James Scales

Vernon John Legvold

Michael P Vageline

Eric John Bartlett

Michael John Jones

Joseph W Dain

Robert Beverley Basham

John Mark Clifton

Lee Jason Sanders

John Paul Agombar

Joanna Katharine Brown

John Earle Lindley

Mark B Thomas

Robert Akira Kubo

Karl Allen Nielsen

Carlos Francisco Fuente

Robert Bruce Nicholson

Paul Andrew Ashmore

Simon Walsh

Nicholas Michael O'Rourke

Norman Apperley

Colin R Jewell

Jeremy Michael Pinson

James Mulcahy

Colleen Renee Stouffer

Thomas W Rickard

Justin Thomson Miller

Michael Huw Francis

Barry John Wood

A system, according to one embodiment, includes: a processor, as well as logic that is integrated with the processor, executable by the processor, or integrated with and executable by the processor. The logic is configured to: send, by the processor, point in time copies of data to an object storage system. A directive for manipulating the point in time copies of the data are also set to the object storage system by the processor. Moreover, the point in time copies of the data are manipulated by a storlet on the object storage system according to the directive.

Efficient management of point in time copies of data in object storage

A computer program product, according to one embodiment, is for managing point in time copies of data in object storage. The computer program product includes a computer readable storage medium having program instructions embodied therewith. Moreover, the program instructions executable by a processor to cause the processor to: create, by the processor, point in time copies of data, and send, by the processor, the point in time copies of the data to an object storage system. A directive for manipulating the point in time copies of the data is also sent by the processor to the object storage system.

Efficient management of point in time copies of data in object storage by sending the point in time copies, and a directive for manipulating the point in time copies, to the object storage

A computer program product is provided for managing point in time copies of data in object storage. The computer program product comprises a computer readable storage medium having program instructions embodied therewith. The program instructions are executable by a processor to cause the processor to create point in time copies of data, and send the point in time copies of the data to an object storage system. Also, the program instructions are executable by the processor to cause the processor to send a directive for manipulating the point in time copies of the data.

A computer-implemented method for managing storage devices in a storage subsystem having an array of storage devices, according to one embodiment, includes determining that at least one storage device in the array of storage devices has failed. Storage device characteristics of the failed storage device are compared with storage device characteristics of each of a plurality of candidate devices, and an attempt is made to identify a first candidate storage device having storage device characteristics that match the storage device characteristics of the failed storage device. A second candidate storage device having storage device characteristics most similar to the storage device characteristics of the failed storage device is identified in response to not identifying a candidate device that matches the failed storage device.

Recovery of storage device in a redundant array of independent disk (RAID) or RAID-like array

A resource system comprises a plurality of resource elements and a resource controller connected to the resource elements and operating the resource elements according to a predefined set of operational goals. A method of operating the resource system comprises the steps of identifying error recovery procedures that could be executed by the resource elements, categorizing each identified error recovery procedure in relation to the predefined set of operational goals, detecting that an error recovery procedure is to be performed on a specific resource element, deploying one or more actions in relation to the resource elements according to the categorization of the detected error recovery procedure, and performing the detected error recovery procedure on the specific resource element.

Resource system management

An application is used, by a processor, to provide directives to a tiered data object storage environment for manipulating and managing stored data objects by using an existing policy developed by a history of directives to intelligently estimate which of the data objects are to be migrated between a higher storage tier and a lower storage tier and at what appropriate time, while refraining from migrating data objects with a pending management operation.

Intelligent snapshot point-in-time management in object storage

Various embodiments for managing data objects stored in a tiered data object storage environment, by a processor device, are provided. In one embodiment, a method comprises measuring a service level of a data set tagged to be collocated, and comparing accumulated service levels for a data distribution of the data set to a predetermined service level threshold value, such that if the predetermined service level threshold value is reached, a collocated data optimization event is performed.

Collocation of object storage data with removable media

In one embodiment, a system includes a storage subsystem having an array of storage devices; a receiving component for receiving an error message; a determining component for determining that the error message indicates that a storage device has failed; a collecting component for collecting an array record having storage device characteristics of the failed storage device; a collating component for collating a candidate record having a plurality of candidate entries; a comparing component for comparing storage device characteristics of the failed storage device of the array record with the storage device characteristics of each of the candidate entries; and an identifying component for identifying a first candidate storage device having storage device characteristics that match the storage device characteristics of the failed storage device or a second candidate storage device having storage device characteristics most similar to the storage device characteristics of the failed storage device.

Redundant array of independent disk (RAID) storage recovery

Provided are a system, computer program, and method for restoring redundancy in a storage group when a storage device in the storage group fails. In response to detecting a failure of a first storage device in a storage group, wherein the storage group stores each of a plurality of extents in the first storage device and a second storage device to provide redundancy, a determination is made whether a spare storage device that has a storage capacity less than that of the storage group. One of the extents in a storage location in the second storage device that is beyond an upper limit of positions in the spare storage device is moved to a new storage location. The spare drive is incorporated into the storage group to provide redundant storage for the storage group, wherein the extents in the storage group are copied to the spare drive.

Restoring redundancy in a storage group when a storage device in the storage group fails

Storing defined presets for configuration of a storage controller may include providing a storage controller interface to define a preset associated with an action of the storage controller; receiving preset parameter values for the preset via the interface; validating the preset parameter values to check that the preset is valid; storing the preset within the storage controller, and creating one or more preset objects from the preset, the preset object being accessible by the storage controller at run time. The preset may include a human-readable name; an action name indicating to which associated storage controller action the preset applies, and a set of parameter name-value pairs.

Flexibly storing defined presets for configuration of storage controller

A system is provided for transforming an in-use RAID array from a first array configuration having a first parameter to a second array configuration having a second parameter while preserving a logical data structure of the RAID array. The system includes an extent reservation component, and a data migration component for reading unmigrated data from an area of an array arranged according to the first array configuration and writing the data to an area of the array arranged according to the second array configuration using reserved extents to store migrated data. The system also includes a first I/O component for performing I/O according to the first array configuration on unmigrated data prior to its reading by the data migration component, and a second I/O component for performing I/O according to the second array configuration on the migrated data after writing the migrated data.

System and method for transforming an in-use RAID array including migrating data using reserved extents

A method according to one embodiment includes receiving an I/O request for data, and determining whether the I/O request refers to migrated or unmigrated data. Unmigrated data is data residing on a first portion of a drive array, the first portion being arranged in according to a first array configuration having at least a first parameter. Migrated data is data that has been migrated from the first portion to a second portion of the drive array, the second portion having a second array configuration having at least a second parameter. The method also includes using parameters corresponding to the first array configuration in response to determining that the requested data is unmigrated data. However, in response to determining that the requested data is migrated data, parameters corresponding to the second array configuration are used.

Raid array transformation in a pooled storage system

A computer node comprises dual hard drives. A method of testing the computer node comprises performing a test of the first hard drive, waiting a specific time period, and performing a test of the second hard drive. Each test comprises isolating the drive being tested, writing data to the drive being tested, removing power from the drive being tested, repowering the drive being tested, and reading data from the drive being tested.

Computer node testing

Various embodiments for managing data objects stored in a tiered data object storage environment, by a processor device, are provided. In one embodiment, a method comprises using an application to provide directives to the tiered data object storage environment for manipulating and managing stored data objects such that data objects with a pending management operation are refrained from being migrated from a higher storage tier to a lower storage tier.

In one embodiment, a method includes evaluating event history information for each of one or more events associated with a hardware entity against a symptom rule, the symptom rule defining a validity state of a diagnosis. The method also includes identifying contextual information by receiving and inspecting the event history information in response to the symptom rule being satisfied and the diagnosis being validated. An indication of the validity state of the diagnosis is sent to at least one subscriber that has requested a subscription specifically for the diagnosis.

Growing community of inventors

Winchester, United Kingdom

Matthew John Fairhurst