Symantec Operating Corporation

Diamanti, Inc.

Symantec Corporation

Veritas Operating Corporation

Datawise Systems

Gopal Sharma

Oleg Kiselev

Abhay Kumar Singh

Amitava Guha

Jeffrey Chou

Santosh Shankar Rao

Ronald S Karr

Raghu Krishnamurthy

Santosh Ananth Rao

Poonam P Dhavale

Kalaivani Arumugham

Sambasiva Rao Bandarupalli

Michael E Root

Deepak Tawri

Shie-rei Huang

Jayasenan Sundara Ganesh

Kevin Fong

Randy Shingai

Taher Vohra

Robert Baird

Dharmesh Shah

Prasad Limaye

Chio Fai Aglaia Kong

Narasimha R Valiveti

Michael Wahl

Srikant Sharma

Múkul Kumar

Richard Gorby

Aseem Asthana

Grizel Lopez

Randall K Shigai

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

Provided herein are methods and systems for improved storage strategies for use of collections of storage resources, such as solid state drives, including in connection with a converged networking and storage node that may be used for virtualization of a collection of physically attached and/or network-connected storage resources.

Single-step configuration of storage and network devices in a virtualized cluster of storage resources

Methods and systems for data storage using solid state drives

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 for CDP/R services are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method of transitioning continuous data protection and replication comprising determining whether a first appliance node connected to a switched fabric contains one or more transactions received from a host node, unregistering a world wide port name of a target port of the first appliance node, registering the world wide port name to a target port of a second appliance node connected to the switched fabric, associating one or more logical unit numbers of the second appliance node with the target port of the second appliance node, exporting the one or more logical unit numbers of the second appliance node, logging the target port of the second appliance node into a switched fabric, and logging the target port of the second appliance node into a remote node port of the host node.

Techniques for non-disruptive transitioning of CDP/R services

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 distributing volume status information in a storage system. According to one embodiment, a system may include a plurality of volumes configured to store data, where the volumes are configured as mirrors of one another, and a plurality of hosts configured to access the plurality of volumes. A first one of the plurality of hosts may be configured to execute a mirror recovery process and to maintain a progress indication of the mirror recovery process, and the first host may be further configured to distribute the progress indication to another one or more of the plurality of hosts.

System and method for distributing volume status information in a storage system

A method and apparatus for synchronizing time within a data protection system is described. In one embodiment, the method includes processing input/output activity information associated with at least one client computer, wherein the input/output activity information comprises at least one local client timestamp, determining at least one server timestamp for the at least one local client timestamp and modifying the input/output activity information with the at least one server timestamp.

Method and apparatus for providing time synchronization in a data protection system

Techniques for reducing data storage needs using continuous data protection and replication are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for reducing data storage needs using a continuous data protection and replication device comprising creating a master image of material identified by a user, generating a virtual replica of the master image on a storage area network using the continuous data protection and replication device to virtualize physical storage containing the master image, generating a copy of the virtual replica on the storage area network, and providing a virtual logical unit number to access the copy, wherein the access enables a process which requires exclusive access to content of the master image to obtain such access without requiring physical storage for an entire copy of the master image.

Techniques for reducing data storage needs using CDP/R

A system for ensuring availability using volume server sets in a storage environment employing distributed block virtualization includes a plurality of volume servers, one or more volume clients, one or more physical block devices and a volume server manager. The volume server manager may be configured to designate the plurality of volume servers as a volume server set with an associated volume server set management policy, and to verify each volume server in the volume server set has access to storage within each block device. In addition, the volume server manager may be configured to designate a first volume server of the volume server set to aggregate storage within the block devices into a logical volume, to make the logical volume accessible to the volume clients, and to share configuration information about the volume with the other volume servers of the volume server set.

System and method for providing availability using volume server sets in a storage environment employing distributed block virtualization

Systems, methods, apparatus and software can configure, support, and make use of a coordinator virtual device to determine which node or nodes of a cluster should be ejected from the cluster as a result of a cluster partition or other error event. Fencing software operating on the cluster nodes monitors the cluster for a cluster partition (split-brain) event, and when such an event occurs, software on the nodes attempts to gain control of the coordinator virtual device. A node that succeeds in gaining control of the coordinator virtual device survives. Nodes failing to gain control of the coordinator virtual device remove themselves or are removed from the cluster. The coordinator virtual device can be established by a virtual device configuration server which provides coordinator virtual device access to cluster nodes acting as virtual device configuration clients.

System and method for resolving cluster partitions in out-of-band storage virtualization environments

Systems, methods, apparatus and software can make use of separated I/O processors and strategy processors (implemented in hardware and/or software) to perform virtual device I/O operations. I/O processors operating on cluster nodes, storage appliance ports, or other devices can receive I/O operation requests directed to virtual devices, e.g., volumes or virtual logical units. Information about the request is forwarded to a strategy processor, operating independently or as part of larger volume management software where corresponding physical device I/O operations are determined. The physical device I/O operations can include additional information about the operations, e.g., tag information and summary information, for use in processing the virtual device I/O request. The physical device I/O operations are sent back to the I/O processor which executes the operations and/or passes the operation on to the appropriate storage device. I/O completion messages are sent by the I/O processor in parallel to the source of the I/O request (e.g., a host or application) and to the strategy processor, providing an improvement in I/O latency.

System and method for performing virtual device I/O operations

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

Growing community of inventors

San Jose, CA, United States of America

Gopal Sharma