International Business Machines Corporation

Kariel Sendler

Haim Helman

Ofir Zohar

Shemer Schwartz

Efri Zeidner

Dror Cohen

Shai Gross

Yaron Revah

A method is disclosed for operating a data storage system having one or more network interfaces and a plurality of data storage nodes configured to provide redundant storage locations. The method includes storing a set of node partitions on a given storage node of the plurality of data storage nodes. The method also includes, following a recovery by the given storage node from a malfunction, making a determination for a node partition in the set whether the node partition is current or noncurrent, and processing the node partition according to the determination.

Restoring data to a distributed storage node

A method for operating a storage system, consisting of performing an allocation of respective partitions of a physical storage resource of the storage system to respective hosts of the storage system. The method also includes changing the allocation while permitting the respective hosts of the storage system to access the physical storage resource.

Systems and methods for temporarily transferring use of portions of partitioned memory between host computers

A method for maintaining integrity of data in a redundant mass storage system is provided that includes selecting a plurality of scrubbing selections for a memory system in which each of the scrubbing selections selects a data section on the memory system. The method also includes selecting a respective scrubbing implementation for each scrubbing selection in which each of the scrubbing implementations determines a data check. Another exemplary method is provided for ensuring integrity of data stored in a redundant mass storage system. An apparatus is provided for maintaining data integrity in a redundant mass storage system. A computer-readable storage medium containing a set of instructions for a general purpose computer is provided. The set of instructions include a method for ensuring data integrity in a redundant mass storage system.

Method and apparatus for ensuring data integrity in redundant mass storage systems

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Bat Hefer, Israel

Kariel Sendler