Symantec Operating Corporation

Veritas Operating Corporation

Symantec Corporation

Veritas US IP Holdings LLC

Symantec Coporation

Hans Van Rietschote

Craig W Hobbs

Slava Kritov

Mahesh P Saptarshi

Tommi Salli

Mahesh Joshi

Michael Spertus

Marc P Kwiatkowski

William E Sobel

Oleg Kiselev

Kirk L Searls

Sanjay Sawhney

Veeral P Shah

Darrell Kienzle

Cuong Huu Tran

Anthony T Orling

Hemant Puri

Jeffrey Anuszczyk

James Cabell Poole

Sharad Srivastava

Stephen Duffy

Evan L Marcus

Sachinrao C Panemangalore

A method, apparatus and system for providing access to data comprising launching an image of a virtual machine, determining a file system or a storage container being unsupported by an operating system coupled to the virtual machine, mapping the file system or the storage container onto the operating system and accessing data within the file system or the storage container through the operating system.

Method and apparatus for providing access to data in unsupported file systems and storage containers

A method and apparatus for pre-fetching data to be streamed from a data storage to a user computer comprising the steps of determining information regarding a file type of a data file, establishing pre-fetch parameters in response to the information, accessing the data file and pre-fetching data blocks from the data file in accordance with the pre-fetch parameters is described.

Method and apparatus for prefetching data

An online expert system that can communicate software installation instructions to a remote node through the use of a generic installer executing on the remote node is provided. Embodiments of the online expert system can identify a set of installation instructions configured to install a software product on the remote node, execute the set of installation instructions, record results of the execution of the installation instructions, and, if an error is detected in the results, submit the results for analysis to determine whether a solution to the error is available and execute the solution, if any. Aspects of the online expert system provide for the executing of the installation instructions to include communicating installation-related information to the remote node over a network. Further aspects of the online expert system provide for executing a solution to an error to include communicating solution-related information to the remote node over the network.

Online expert system guided application installation

A system comprises a plurality of nodes coupled via a network. The plurality of nodes are configured to communicate by transmitting and receiving messages between the plurality of nodes. Each message comprises a first version identifier indicative of a first version of an object in a first node of the plurality of nodes, wherein the first node is the transmitter of the message. A second node of the plurality of nodes receives the message, and is configured to upgrade to the first version of the object responsive to the first version identifier indicating that the first version is newer than a second version in the second node (as indicated by a second version identifier in the second node). The second node is configured to include the first version identifier in subsequent messages transmitted by the second node.

Version upgrade via viral infection

A computer-implemented method for using cloud-based storage to optimize data-storage operations may include: 1) receiving a request from a client device for instructions or directions for storing a data object, 2) accessing a data-placement policy that contains criteria for identifying storage systems suitable for storing the data object, 3) identifying, based at least in part on the data-placement policy, a plurality of storage systems for storing the data object, at least one of the storage systems including a third-party Internet-based storage system, and then 4) directing the client device to store the data object on the identified storage systems.

Systems and methods for using cloud-based storage to optimize data-storage operations

Various systems and methods for exchanging communications between devices coupled by an address translation device are disclosed. These techniques can be used to facilitate automatic relationship discovery. One method involves extracting a sequence number from a TCP acknowledgment message being conveyed from a network interface to a TCP stack, and then sending a new TCP message, which includes the sequence number.

Reliable communication channel over existing TCP connection

A system for dynamic tagging of network data based on service level objectives comprises one or more processors and memory coupled to the processors. The memory comprises program instructions executable by the processors to identify a service level objective associated with a particular task that comprises a transmission of data packets over a network on behalf of an application, where the network includes one or more devices (such as routers, switches, etc.) configured to provide different levels of service to data packets based at least in part on service level indicators included within the packets. The instructions are executable to dynamically generate service level indicators corresponding to the identified service level objectives for inclusion in the data packets of the task, and to transmit the packets including the service level indicators into the network.

Dynamic tagging of network data based on service level objectives

A method and mechanism for monitoring performance in a network computing system. A user application on a source system is configured to communication with a destination system. The application is configured to load a dynamic linked library upon execution. The dynamic linked library is configured to store packet identifiers and time stamp information for communication packets received from the application prior to the packets being conveyed to the destination system. Upon receipt of an acknowledgement packet from the destination system, the library code is configured to retrieve the previously stored time stamp information, determine transit latency information corresponding to the communication packet, and log the determined transit latency information. Acknowledgement packets may further include time stamp information which may be utilized to determine additional latency information corresponding to the communication packet and/or acknowledgement packet. Logged information may be used to distinguish application problems from network performance problems.

Detection of network problems in a computing system

A computer system and method for performing restore operations. A computer system includes one or more hosts. At least one host includes a backup agent. In response to a request to restore a file to a first host, a backup component identifies copies of portions of the file stored on a second host, retrieves the copies, and restores the file on the first host from the copies. The backup component maintains a catalog of entries corresponding to copies of portions of files stored on the hosts. In response to a request to restore the file to a first host, the backup component queries the catalog to identify one or more candidate locations where copies of portions of the file have been stored. The first and second hosts may be the same. The backup component may be located on a host or on a backup server.

Leveraging client redundancy on restore

A system and method for writing and reading blocks of a data volume are disclosed. The method provides continuous data protection (CDP) for a data volume by backing up blocks of the data volume in real time to a local CDP log and transmitting the blocks over the Internet for storage in a remote CDP log on a server computer system in response to write requests that change the blocks of the data volume. In response to a read request for a particular block the method attempts to read the block from the data volume. If the block is not present in the data volume the method attempts to read the block from the local CDP log. If the block is not present in the local CDP log the method request the server computer system to read the block from the remote CDP log and return the block.

Continuous data protection and remote block-level storage for a data volume

In some embodiments, a system comprises at least one computer system, wherein the computer system is configured to execute a virtual machine corresponding to a user. The system further comprises a storage subsystem configured to store data representing the virtual machine and at least one file server. The file server is coupled to a network to which the computer system is configured to be coupled, and is also coupled to the storage subsystem. The file server is configured to provide the computer system with access to the data representing the virtual machine from the storage subsystem over the network. In some embodiments, the computer system is configured for essentially continuous connection to the network during use. In other embodiments, the computer system is configured for intermittent connection to the network during use.

Central administration and maintenance of workstations using virtual machines, network filesystems, and replication

A system for bulk network transmissions using multiple connections primed to optimize transfer parameters includes one or more processors and memory coupled to the processors. The memory stores program instructions executable by the processors to establish a plurality of network connections designated to be used for a single bulk data transfer. The instructions are further executable to adjust the values of one or more configuration parameters of each of the connections. The adjusting includes sending one or more priming packets over each of the connections. The instructions are also executable to perform the bulk transfer as a sequence of sub-transfers. Each sub-transfer includes a transmission of a predetermined amount of application data over each connection of a selected subset of the plurality of network connections.

Bulk network transmissions using multiple connections primed to optimize transfer parameters

A system and method for creating and utilizing dynamic directories in a computing system. A computing system includes a file system and a dynamic directory mechanism. The dynamic directory mechanism is configured to enable a user to create dynamic directories which are identifiable as having special behaviors associated with them. The user may create executable instructions for performing the special behaviors in a user space of an operating system and associate the special behaviors with selected native file system operations which may be performed on the directory. In response to detecting an operation on a directory is initiated, the mechanism determines whether the directory is a dynamic directory. If the directory is a dynamic directory, the mechanism determines whether any predetermined special behaviors have been defined for the initiated operation and if so performs the special behaviors.

Dynamic directories

A cluster comprises a plurality of computer systems, wherein each of the plurality of computer systems is configured to execute one or more virtual machines. Each of the plurality of computer systems comprises hardware and a plurality of instructions. The plurality of instructions, when executed on the hardware, migrates at least a first virtual machine executing on a first computer system of the plurality of computer systems to a second computer system of the plurality of computer systems. The plurality of instructions migrates the first virtual machine responsive to a first load of the first computer system prior to the migration exceeding a second load of the second computer system prior to the migration.

Migrating virtual machines among computer systems to balance load caused by virtual machines

A system for preventing network micro-congestion using send pacing based on end-to-end bandwidth. The system includes one or more processors and memory coupled to the processors, wherein the memory contains program instructions executable by the processors to obtain an estimate of end-to-end network bandwidth available to a particular application-level data transfer operation in progress over a network between a first endpoint and a second endpoint. Based at least in part on the estimate of end-to-end bandwidth, the instructions are further executable to introduce a delay between transmissions of two or more successive messages or packets of the particular application-level data transfer operation from the first endpoint.

Growing community of inventors

Sunnyvale, CA, United States of America

Hans Van Rietschote