Western Digital Technologies, Inc.

Samuel Kevin Baughman

Sailesh Rachabathuni

Gabriel Ribeiro

Jonathan Gaillard

Stephen Allen Hellwege

John Edward Maroney

Varujan Sahakian

Systems and methods are disclosed for reconstructing a file hierarchy by scanning attributes of stored files. Stored files can have a file hierarchy that is maintained in a database stored on a storage device. The files can be stored as objects on the device using a flat file structure. The file database provides the file hierarchy. The systems and methods disclosed herein store information in file system extended attributes for individual storage files such that the database can be reconstructed by scanning the storage files, using values in the extended attributes to recreate the hierarchical database.

Using file system extended attributes to update databases in hierarchical file systems

Using file system extended attributes to recover databases in hierarchical file systems

Systems and methods for controlling and monitoring multiple fans in conjunction with a single fan controller are described. One such system includes the single fan controller, a plurality of fans, and a multi-fan monitor configured to receive a signal indicative of fan speed for each of the fans, (a) determine, for a selected fan of the fans, whether the respective received fan speed signal is within an expected fan speed range, if the respective received fan speed signal is not within the expected fan speed range transmit a signal to the single fan controller indicative of a fan failure, if the respective received fan speed signal is within the expected fan speed range transmit a signal to the single fan controller indicative of the fan speed for each of the fans, and return to (a) to test a next selected fan of the fans.

Systems and methods for controlling and monitoring multiple fans in conjunction with a single fan controller

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Anaheim, CA, United States of America

Samuel Kevin Baughman