Red Hat, Inc.

Dell Products Inc.

Henry Dan Lambright

Jeffrey Alan Brown

Luis Pablo Pabón

Karthik Mynam

Data can be stored in a persistent-memory device, rather than a hard drive, of a computing device. A copy of the data can also be stored in another persistent-memory device of a remote computing device. For example, a central processing unit (of the computing device) can perform a first write operation to cause a file to be stored in the persistent-memory device. A memory controller can perform a second write operation to cause another memory controller of the remote computing device to store a copy of the file in the other persistent-memory device of the remote computing device.

Persistent-memory management

Deduplication in a distributed storage system is described. A deduplication manager defines a first extent on a first node in a distributed storage system. The deduplication manager selects a second extent from the one or more groups of extents. The second extent matches the first extent. The deduplication manager removes, from the first extent, one or more data chunks that are included in the second extent. The deduplication manager associates, with the first extent, a pointer to the second extent for the removed one or more data chunks.

Distributed deduplication using locality sensitive hashing

The invention pertains to a method and Information Handling System (IHS) for performing delta compression on probabilistically clustered chunks of data. From a source of chunks a corresponding sketch to represent each chunk is generated. Then, from the generated sketches a subset of similar sketches is determined using a probabilistic based algorithm. Finally, delta compression is performed on the chunks which are represented by the similar sketches in the determined subset.

Delta compression of probabilistically clustered chunks of data

Deduplication in a distributed storage system is described. A deduplication manager identifies a data item that includes multiple data chunks. The deduplication manager defines a first extent on a first node in a distributed storage system. The deduplication manager compares the first extent to existing groups of similar extents to find one of the existing groups that has extents that are similar to the first extent. The deduplication manager selects a second extent from the found group of extents. The second closely matches the first extent and removes from the first extent one or more data chunks that are included in the first extent and the second extent. The deduplication manager associates, with the first extent, a pointer to the second extent for the removed one or more data chunks.

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Nashua, NH, United States of America

Henry Dan Lambright