International Business Machines Corporation

Gaurav Chhaunker

Sandeep R Patil

Subhojit Roy

Carl Evan Jones

Pankaj S Bavishi

Pankaj Omprakash Khandelwal

Matthew B Trevathan

Bhushan Pradip Jain

Sri Ramanathan

Dhaval Kiritbhai Shah

John Gerard Musial

Ganesh Sivaperuman

Muthu A Muthiah

Husein Shamshudin

Gandhi Sivakumar

Umesh P Gaikwad

Vikram B Sanap

Sri Ramanthan

Roy Subhojit

An application programming interface (API), functioning as an interface between a storage controller and an owning application, is used to migrate, from a specified source LUN to a specified target LUN, at least one specified sub-LUN data chunk, the at least one specified sub-LUN data chunk having a predefined chunk size fixed by the storage controller. A specified total migration size is incrementally reduced by each completed migration of the at least one specified sub-LUN data chunk until the total migration size is zero and the migration is completed.

Application-controlled sub-LUN level data migration

An application programming interface (API) is used to migrate, from a specified source LUN to a specified target LUN, at least one specified sub-LUN data chunk, the API functioning as an interface between a storage controller and an owning application.

A source code-based specification is implemented for use as an interface between a storage controller and an owning application to migrate a specified size of data from physical storage behind the LUN to a new physical location.

Application-controlled sub-lun level data migration

An embodiment of the invention provides a method for storage management in a cloud computing system. More specifically, locations of storage components in the cloud computing system and storage properties of the storage components are identified. The storage properties include the amount of available storage space and/or the cost of storage space. A storage quota for a user of the cloud computing system is generated with a cloud quota management module based on the locations of the storage components and/or the storage properties of the storage components. In at least one embodiment, the storage quota includes the maximum amount of storage allocated to the user in at least one of the storage components.

Enhanced storage quota management for cloud computing systems

Physical storage devices are configured as a redundant array of independent disks (RAID). As such, storage space of the physical storage devices is allocated to the RAID, and each physical storage device is part of the RAID. Where a portion of the storage space of the physical storage devices is not allocated to the RAID, this portion of the storage space is configured so that it is usable and is not wasted.

Using unused portion of the storage space of physical storage devices configured as a RAID

A method includes receiving a request to save a first file as immutable. The method also includes searching for a second file that is saved and is redundant to the first file. The method further includes determining the second file is one of mutable and immutable. When the second file is mutable, the method includes saving the first file as a master copy, and replacing the second file with a soft link pointing to the master copy. When the second file is immutable, the method includes determining which of the first and second files has a later expiration date and an earlier expiration date, saving the one of the first and second files with the later expiration date as a master copy, and replacing the one of the first and second files with the earlier expiration date with a soft link pointing to the master copy.

Managing redundant immutable files using deduplication in storage clouds

Physical storage devices are configured as a redundant array of independent disks (RAID). As such, storage space of the physical storage devices is allocated to the RAID, and each physical storage device is part of the RAID. Where a portion of the storage space of the physical storage devices is not allocated to the RAID, this portion of the storage space from a mixed drive capacity is configured so that it is usable and is not wasted.

A computational device receives a request to copy a source logical block of a thin provisioned source logical unit to a target logical block of a thin provisioned target logical unit, wherein in thin provisioned logical units physical storage space is allocated in response to a write operation being performed but not during creation of the thin provisioned logical units. The computational device generates metadata that stores a correspondence between the source logical block and the target logical block, while avoiding allocating any physical storage space for the target logical block in the thin provisioned target logical unit.

Interface for management of data movement in a thin provisioned storage system

Ambient sound-based call functions include calculating, via a computer processor on a mobile communications device, a decibel level of ambient noise. In response to receiving an incoming call from a calling device, and prior to activating a ringtone on the mobile communications device, the ambient sound-based call functions include determining that the decibel level exceeds a threshold value, and sending an automated response to the calling device in lieu of connecting the call to the mobile communications device.

Growing community of inventors

Hyderabad Telangana, India

Gaurav Chhaunker