Symantec Operating Corporation

Exablox Corporation

Ramesh Balan

Joshua T Druker

Peter A Privitera

Tad Hunt

Jon Carver

Douglas Brockett

Balemurughan Kumaresan

Harold Bailey Prince, Jr

Murali Nagaraj

Anurag Anural

Jim Nagler

An apparatus for removing a modular electronic device from a chassis and a method for assembling thereof are provided. The apparatus for removing the modular electronic device from the chassis comprises a door pivotally coupled to the chassis, a sliding element in slidable engagement with the door, a first ejection actuator coupled to the door and configured to move simultaneously with the door, a second ejection actuator including a spring member connected to the second ejection actuator and to the rear of the chassis, and a linkage element connecting the sliding element with the second ejection actuator. Additionally, the apparatus for removing the modular electronic device from the chassis comprises a guide rail disposed in the chassis enclosure to guide the modular electronic device and to guide the second ejection actuator along the chassis enclosure.

Modular electronics chassis

An apparatus for removing a modular electronic device from a chassis and a method for assembling thereof are provided. The apparatus for removing the modular electronic device from the chassis includes a door pivotally coupled to the chassis, a sliding element in slidable engagement with the door, an ejection actuator including a spring member connected to the ejection actuator and to the rear of the chassis, and a linkage element connecting the sliding element with the ejection actuator. Additionally, the apparatus for removing the modular electronic device from the chassis includes a guide rail disposed in the chassis enclosure to guide the modular electronic device and to guide the ejection actuator along the chassis enclosure.

An application may issue write operations intended for a SAN via a server cache. Monitoring of the SAN (e.g., the autonomous persistent cache of the storage arrays of the SAN), allows caching performance to be controlled by a write caching policy. The server cache memory may be increased, decreased or eliminated according to the write caching policy. In one embodiment, a storage volume manager may adjust the latency of write operations in the server cache. In some embodiments, the write caching policy may adapt and learn characteristics of the storage environment, which may include calibrated values for messaging timestamps.

Controlling cached write operations to storage arrays

A method, system, computer system, and computer-readable medium to efficiently coordinate caching operations between nodes operating on the same file while allowing different regions of the file to be written concurrently. More than one program can concurrently read and write to the same file. Pages of data from the file are proactively and selectively cached and flushed on different nodes. In one embodiment, range locks are used to effectively flush and invalidate only those pages that are accessed on another node.

Page cache management for a shared file

A method, system, application programming interface, computer system, and computer program product to provide locks for controlling access to data by nodes in a multi-node environment while minimizing messages sent between nodes. Based upon knowledge of lock usage in the multi-node environment, a multi-node knowledge agent can determine when no other node is accessing data protected by a given lock, as well as when an event has occurred that precedes a request by another node to access data protected by the given lock. When no other node is accessing data and no such event has occurred, the multi-node knowledge agent can designate that given lock as 'masterless.' A lock agent on the node hosting the multi-node knowledge agent is authorized to subsequently grant access to the data protected by the masterless lock to clients on that node without communicating with a lock master, which may reside at another node.

Growing community of inventors

Cupertino, CA, United States of America

Ramesh Balan