Symantec Operating Corporation

Diamanti, Inc.

Cisco Technology, Inc.

Veritas Operating Corporation

Datawise Systems

Amitava Guha

Gopal Sharma

Jeffrey Chou

Venkatesh Prabhakar

Sunden Chen

Raghu Krishnamurthy

Prasad Limaye

Jayasenan Sundara Ganesh

Hiral Patel

Kevin Fong

Ronald S Karr

Subhojit Roy

Angshuman Bezbaruah

Mukul Kumar

Santosh Shankar Rao

Anand Gopinath Das

John Joseph Glen

Krishna Mohan

Múkul Kumar

Hirai Patel

Chakravarthy Nelluri

Enabling a protocol for efficiently and reliably using the NVME protocol over a network, referred to as NVME over Network, or NVMEoN, may include an NVMEoN exchange layer for handling exchanges between initiating and target nodes on a network, a burst transmission protocol that provides guaranteed delivery without duplicate retransmission, and an exchange status block approach to manage state information about exchanges.

Enabling use of non-volatile media-express (NVMe) over a network

Enabling use of non-volatile media&#x2014;express (NVME) over a network

A device includes a converged input/output controller that includes a physical target storage media controller, a physical network interface controller and a gateway between the storage media controller and the network interface controller, wherein gateway provides a direct connection for storage traffic and network traffic between the storage media controller and the network interface controller.

Methods and systems for converged networking and storage

Providing data that is remotely stored to an operating system responsive to a local access request

A method for achieving optimal use of compute, storage and network resources in a distributed computing system is provided. In one embodiment, a job request associated with a file is submitted. A Job Scheduler in conjunction with a workflow manager determines the best fit for dynamically chunking size of the file. The distributed storage subsystem provides a dynamic view to the compute resources where the job will be run. This knowledge is also used to pre-staging the data by the distributed storage subsystem. Furthermore, keeping a history of the job and their data allows for further improvements in resources and job execution times by being able to skip processing on data that has been done previously. Given the ability to chunk the file dynamically, it is possible to re-balance resources for running the job dynamically to meet its service level agreement.

Method and apparatus for achieving optimal resource allocation dynamically in a distributed computing environment

Techniques are provided to redistribute and rebalance power to a plurality of blade servers with a chassis unit. At a chassis management controller device in a chassis unit comprising a plurality of blade server devices, policy information is stored for the chassis unit. The policy information comprises power limit information that indicates a power budget for the chassis unit and blade server priority information that indicates priority for access to power for each of the plurality of blade servers in the chassis unit. Power is distributed to the plurality of blade servers based on the blade server priority information for each of the plurality of blade servers and the power limit information for the chassis unit. The actual power consumption of each of the plurality of blade servers is determined and power is redistributed to the plurality of blade servers based on the actual power consumption and the policy information.

Dynamic power balancing among blade servers in a chassis

A method and apparatus for logging write requests to a storage volume in a network data switch is described. In one example, a switch component in a switch receives a write request from a host server. The write request is associated with a destination in the storage volume. A logging element is identified that is associated with the destination of the write request. The logging element may be a switch component in the switch (e.g., a virtualization card), or may be dedicated logging circuitry in the switch. The identified logging element then logs a write intent for the destination in a log.

Method and apparatus for logging write requests to a storage volume in a network data switch

System and method for resynchronizing mirrored volumes in a storage system. According to one embodiment, a system may include a first volume located at a primary site and associated with a first storage management device, and a second volume located at a secondary site and associated with a second storage management device, where the secondary site is coupled to the primary site via a data link, and where the second volume is configured as a mirror of the first volume. The first storage management device may be configured to convey to the second storage management device an indication of a data block written to the first volume subsequent to a failure of the data link. Dependent upon the indication, the second storage management device may be configured to create a snapshot of the data block as stored on the second volume prior to resynchronization of the data block.

System and method for resynchronizing mirrored volumes

A system for host-based virtualization optimizations in storage environments employing off-host virtualization may include a host, one or more physical storage devices, and an off-host virtualizer such as a virtualizing switch. The off-host virtualizer may be configured to aggregate storage within the one or more physical storage devices into a virtual storage device such as a logical volume, and to provide control data for the virtual storage device to the host. The host may be configured to use the control data to perform a function in response to an I/O request from a storage consumer directed at the virtual storage device, and to use a result of the function to coordinate one or more I/O operations corresponding to the I/O request.

Host-based virtualization optimizations in storage environments employing off-host storage virtualization

Systems, methods, apparatus and software can combine information about host access to virtualization functionality and virtualization functionality access to storage, use this information in decisions pertaining to high availability of virtualization in an SAN. Upon detection of the partitioning of a SAN fabric, accessibility information is gathered. That information is analyzed to uncover potential failover scenarios, orchestrate such failovers, and in some cases select best case solutions from among several possible solutions based on access prioritization criteria (e.g., defined priority, maximum access, maximum I/O, etc.).

System and method for resolving SAN fabric partitions

A method and system for virtualization switch failover is disclosed. According one embodiment of the present invention, a failure of a first virtualization device within storage a area network interconnect and associated with a unique interconnect device identifier is detected and the unique interconnect device identifier is responsively associated with a second virtualization device of the storage area network interconnect.

Method and system for virtualization switch failover

Systems and methods for storage area network switch port failure recovery. A system may include several hosts, storage devices and a storage area network (SAN) switch. The SAN switch may include several ports, where each host is coupled to a respective host port and each storage device is coupled to a respective storage port. The SAN switch may also include virtualization logic configured to map several of the storage devices as a volume presented to the hosts via the respective host ports, and an input/output (I/O) tracking mechanism configured to store information about write operations in progress at each of the ports. In response to a failure of a given port occurring while write operation(s) to the volume received via one or more of the respective host ports are in progress, the SAN switch may be configured to initiate consistency recovery of the volume using the stored information.

Growing community of inventors

San Jose, CA, United States of America

Amitava Guha