Symantec Corporation

Veritas Technologies LLC

Veritas Operating Corporation

Ashish Laxmanrao Gawali

Subash Rajaa

Niranjan Sanjiv Pendharkar

Shailesh Marathe

Sanjay Kumar

Amit Haridas Rangari

Shrikant Ghare

Arindam Mukherjee

Kalyani Sundaralingam

Debasish Garai

Sirisha Suryanarayan Kalpa

Techniques for backing up application-consistent data using asynchronous replication are disclosed. In one particular embodiment, the techniques may be realized as a method for backing up application-consistent data comprising receiving a backup request to backup application data and storing the application data in a volume of storage space. The method may also comprise taking a snapshot of the application data stored in the volume of storage space and quiescing, via a quiescing module comprising at least one computer processor, the snapshot of the application data stored in the volume of storage space. The method further comprise transmitting application-consistent data, wherein the application-consistent data may comprise the application data stored in the volume of storage space and the quiesced snapshot of the application data stored in the volume of storage space.

Techniques for backing up application-consistent data using asynchronous replication

A computer-implemented method for measuring compliance with a recovery point objective for an application may include identifying a set of mount points on a primary site written to by the application. The computer-implemented method may also include identifying a second site used for asynchronous replication of the primary site. The computer-implemented method may further include periodically updating a time value on each mount point in the set of mount points on the primary site. The computer-implemented method may additionally include, for each mount point in the set of mount points, measuring a replication lag by calculating a difference between the time value on the mount point and a replication of the time value on a corresponding mount point on the secondary site. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for measuring compliance with a recovery point objective for an application

Techniques for managing disaster recovery sites are disclosed. In one particular embodiment, the techniques may be realized as a method for managing disaster recovery sites comprising generating a heartbeat at a first node, transmitting the heartbeat from the first node to a second node, determining whether a network connection between the first node and the second node has failed, determining whether the second node has received an additional heartbeat from the first node, and changing a state of the secondary node based on the determination of whether the second node has received the additional heartbeat.

Techniques for managing disaster recovery sites

A computer-implemented method for disaster recovery of multi-tier applications may include 1) identifying a multi-tier application that is provisioned with a plurality of production clusters at a production site, 2) identifying a disaster recovery site including a plurality of recovery clusters, 3) identifying, at the disaster recovery site, a failure of the multi-tier application at the production site, and 4) initiating, from the disaster recovery site, a migration of the multi-tier application from the production site to the disaster recovery site. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for disaster recovery of multi-tier applications

A host-based replication snapshot method. The method includes synchronizing a set of data objects stored at both a replication source node and a secondary node. The method further includes identifying changed data objects out of the set of data objects from the replication source node that have been modified during a time period between a first time and a subsequent second time. Metadata indicating the changed data objects from the replication source node is transmitted to the secondary node. A snapshot is then generated at the second time on the secondary node by using the metadata.

Host based software block level replication using metadata indicating changed data objects at source and secondary nodes

A method for defining and managing a composite service group for a cluster based computer system is disclosed. The method includes instantiating a plurality of application units on a cluster based computer system, wherein the application units implement a business service. The method further includes receiving a composite service group definition, wherein a composite service group enumerates application units, out of the plurality of application units, that implement the business service, and generating a consolidated status of the composite service group. The business service is then started (online)/stopped (offline)/migrated/failed-over/failed-back in accordance with the consolidated status, as a single unit, by using the composite service group.

System and method to define, visualize and manage a composite service group in a high-availability disaster recovery environment

A computer-implemented method for facilitating long-distance live migrations of virtual machines may include: 1) identifying a request for a live migration of a virtual machine from a primary site to a secondary site, the primary site including a primary storage device used for storage by the virtual machine being configured for active-passive replication to a secondary storage device at the secondary site, 2) initiating a failover of the active-passive replication from the primary storage device to the secondary storage device in response to the request, 3) intercepting each write attempt made by the virtual machine at the secondary site to the secondary storage device before completion of the failover, 4) buffering each intercepted write attempt, 5) determining that the failover is complete, and 6) applying each buffered write attempt to the secondary storage after determining that the failover is complete. Various other methods, systems, and computer-readable media are also disclosed.

Systems and methods for facilitating long-distance live migrations of virtual machines

A method, apparatus and system for improving failover within a high-availability computer system are provided. The method includes obtaining one or more parameters associated with a disaster recovery protocol of at least one resource of any of the first cluster, second cluster and high-availability computer system. The method also includes monitoring one or more states of the parameters. The method further includes detecting, as a function of the parameters and states, one or more anomalies of any of the first cluster, second cluster and high-availability computer system, wherein the anomalies are types that impact the failover. These anomalies may include anomalies associated with the disaster-recovery protocols within the first and/or second clusters ('intra-cluster anomalies') and/or anomalies among the first and second clusters ('inter-cluster anomalies'). The method further includes generating an alert in response to detecting one or more of the anomalies.

Method, apparatus and system for improving failover within a high availability disaster recovery environment

A method, apparatus and system for improving failover within a high-availability computer system are provided. The method includes obtaining one or more parameters associated with at least one resource of any of the first cluster, second cluster and high-availability computer system. The method also includes detecting, as a function of the parameters, one or more anomalies of any of the first cluster, second cluster and high-availability computer system, wherein the at least one anomaly is a type that impacts the failover. These anomalies may include anomalies within the first and/or second clusters ('intra-cluster anomalies') and/or anomalies among the first and second clusters ('inter-cluster anomalies'). The method further includes generating an alert in response to detecting one or more of the anomalies.

Method, apparatus and system to automate detection of anomalies for storage and replication within a high availability disaster recovery environment

Replication of application files in a clustered environment may be automated based on the state and/or configuration of the application in the cluster. A clustering engine executing on one or more clustered computing nodes may notify one or more replication agents regarding changes in a clustered application's state and/or configuration. An application's status may include information indicating one or more cluster nodes on which the application is currently executing and also may include information indicating one or more cluster nodes on which the application is configured to execute. Replication agents executing on cluster nodes may, either individually or through collective coordination, modify a replication policy for replicating one or more application files based on the received status information. Subsequently, the replication agents may replicate the application files from one of the clustered computing nodes to one or more other nodes, according to the modified replication policy.

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Pune, India

Ashish Laxmanrao Gawali