Network Appliance, Inc.

Netapp, Inc.

Christopher Wagner

Jason Ansel Lango

Konstantinos Roussos

Robert Tsai

Ram Kesavan

Peter Frank Corbett

Robert Lieh-Yuan Tsai

A lightweight coherency control protocol ensures consistency of data containers, such as a file, and associated data buffers stored on one or more volumes served by a plurality of nodes, e.g., storage systems, connected as a cluster. Each data buffer is associated with a current cache sequence number comprising a load generation value and an update count value. The load generation value is incremented every time an inode of a file is loaded into a memory of the storage system. Once the inode is loaded and its load generation value is set, then the appropriate buffer of a buffer tree for the file is loaded into the memory. The update count value is incremented each time the buffer is updated with a write request/operation. Therefore, each buffer loaded into memory is tagged with the load generation value and an update count from the time that buffer is loaded.

Lightweight coherency control protocol for clustered storage system

A method for storing streaming media data packets in a cache includes receiving a first streaming media data packet from a streaming media server, the first streaming media data packet comprising first header data and first payload data, pre-determining a first payload checksum in response to at least a portion of the first payload data, storing at least a portion of the first header data and the first payload checksum as first packet meta data in a first data object in the cache memory, and storing the first payload data in the first data object in the cache memory, wherein the first data object is directly addressable in the cache memory via an associated object handle.

Methods and apparatus for precomputing checksums for streaming media

A cache memory configured to store media data to be output as a media stream includes a session data file configured to store properties of the media stream, wherein the properties may include encoding scheme, duration, and others, and a plurality of data object files, each data object file individually and directly accessible by a file system, each data object file comprising a data object configured to store only a portion of the media data.

Storage methods and apparatus for streaming media data

A method for pre-computing a streaming media payload in a server includes receiving a data file from a streaming media server, determining a plurality of data packets from the data file, dividing the plurality of data packets into a plurality of sets of data packets, forming a plurality of data objects, each data object comprising a set of data packets from the plurality of sets of data packets, and storing the plurality of data objects in a server memory, wherein each data object is individually accessible from the server memory.

Growing community of inventors

Langley, WA, United States of America

Christopher Wagner