International Business Machines Corporation

Mario H Lichtsinn

Hovey Raymond Strong

Steven Robert Hetzler

Hovey R Strong, Jr

Tobin Jon Lehman

Methods and arrangements for providing a compressed representation of a number sequence. An input number sequence is received, as is a stored number sequence. The input number sequence is compared to the stored number sequence. The comparing includes determining a set of coefficients corresponding to the input number sequence, via solving at least one algebraic equation, the at least one algebraic equation comprising at least one of: an arithmetic equation, and an exponential equation. The comparing further includes applying at least one test to determine whether the set of coefficients identifies at least a portion of the stored number sequence as matching the entire input number sequence.

Matching pattern combinations via fast array comparison

Embodiments of the invention relate to systematic migration of data. Data is streamed to data storage and stored in a virtual storage device (VSD). Stored data is systematically migrated from the VSD to a higher density VSD, while streaming of data is also switched to the higher density VSD. Source and target data extents are maintained and merged upon completion of the data migration, together with linking the streamed data blocks with the migrated data blocks in the order presented in the input stream.

Wait-free stream oriented migration based storage

A computer program product, including a computer readable storage medium to store a computer readable program, wherein the computer readable program, when executed by a processor within a computer, causes the computer to perform operations for moving data stored on a transactional semantic independent persister in a distributed environment. The operations include: receiving an indicator to move data stored by the persister at a first node of the distributed environment to a second node of the distributed environment, wherein the data corresponds to a source; and cloning the persister at the first node to a cloned persister at the second node in response to receiving the indicator, wherein the cloning includes: moving data stored by the persister at the first node to the cloned persister; and moving remaining data in a data stream between the source and the persister at the first node to the cloned persister.

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San Jose, CA, United States of America

Mario H Lichtsinn