Brocade Communications Systems, Inc.

Tintri Inc.

Amar Vutukuru

Amr Sabaa

Pashupati Kumar

Siva Adiraju

Hiren Desai

Poulo Kuriakose

Ryan Hegland

Andy Dooley

Chirag Lathia

Techniques to achieve high availability in a multi-controller system are disclosed. In various embodiments, an indication is received that a network ping-based heartbeat mechanism has failed. In response to said indication, an alternative heartbeat is provided at least in part by periodically updating a heartbeat data stored in an on-disk heartbeat data structure, in a portion of a disk that is available to both an active controller and a standby controller of the multi-controller system.

Multi-tier mechanism to achieve high availability in a multi-controller system

In a network where there are two local area networks (LANs) connected over a wide area network (WAN) by paralleled LAN to WAN devices at each end of the WAN, Transmission Control Protocol (TCP) connections may be requested by a first near end LAN to WAN device and received at a first far end LAN to WAN device but the acknowledgement may be returned to a second far end LAN to WAN device. The second far end LAN to WAN device contacts the first far end LAN to WAN device and the TCP connection is moved to the second far end LAN to WAN device, which provides the acknowledgement to the first near end LAN to WAN device to complete the TCP connection. Similar operations occur during active TCP connection operation but with certain queued data being flushed during the TCP connection transfer.

TCP connection relocation

In one embodiment, a system and method for managing a network deduplication dictionary is disclosed. According to the method, the dictionary is divided between available deduplication engines (DDE) in deduplication devices that support shared dictionaries. The fingerprints are distributed to different DDEs based on a hash function. The hash function takes the fingerprint and hashes it and based on the hash result, it selects one of the DDEs. The hash function could select a few bits from the fingerprint and use those bits to select a DDE.

Shared dictionary between devices

Growing community of inventors

San Jose, CA, United States of America

Amar Vutukuru