Veritas Technologies LLC

Emc IP Holding Company LLC

Cheng Wan

Lei Zhang

Xinlei Xu

Yousheng Liu

Tao Liu

Guang Yang

Baote Zhuo

Socheavy D Heng

Lei Hu Zhang

Cheng Hai Zhu

A method, computer program product, and computer system for executing an automatic recovery of log metadata. A secondary storage processor may request one or more log metadata buffer values from a first buffer used by a primary storage processor. The secondary storage processor may update one or more log metadata buffer values from a second buffer used by the secondary storage processor.

System and method for log metadata automatic recovery on dual controller storage system

Disclosed herein are methods, systems, and processes to improve backup and restore performance in deduplication storage environments. A metadata stream that includes data segment offsets that are associated with data segments of a previous backup image and indicate data segment boundaries is received. An offset for an include operation is determined. The include operation references one or more data segments, and is part of a request to perform a backup operation. The backup operation is performed by modifying the include operation, if the offset involves one or more partial data segments.

Performance of deduplication storage systems

A disclosed computer-implemented method for retrieving data may include (1) receiving a request to retrieve data segments from a storage system that stores data segments in a plurality of data containers, (2) obtaining, for each data segment, information that indicates which data container stores the data segment, (3) determining, based on the information that indicates which data container stores each data segment, that using an initial access order to retrieve the data segments would result in visiting one or more data containers more than one time, (4) rearranging access to one or more data segments such that retrieving the data segments results in visiting the data containers at least one fewer times than using the initial access order, and (5) retrieving the data segments from the storage system based on the rearranged access order. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for retrieving data

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Cheng Wan