Abstract: Memory is used, including by receiving at a processor an indication that a first piece of metadata associated with a set of backup data is required during a block based backup and/or restore. The processor is used to retrieve from a metadata store a set of metadata that includes the first piece of metadata and one or more additional pieces of metadata included in the metadata store in an adjacent location that is adjacent to a first location in which the first piece of metadata is stored in the metadata store, without first determining whether the one or more additional pieces of metadata are currently required. The retrieved set of metadata is stored in a cache.

Abstract: Enabling a client computer to perform an operation is disclosed. Login information is received from a client computer. The login information is confirmed by querying a trusted agent on the client computer.

Abstract: Described are embodiments of an invention for prioritizing data items for backup in a computing environment. The computing environment includes a plurality of clients coupled through a network to a backup system for backing up items stored locally on the client. Each client includes a continuous data protection (CDP) module that prioritizes the order of files transmitted to the backup system for storage on one or more storage devices based on policy. The CDP module builds an initial backup list and a CDP backup list. The initial backup list includes any item that meets the criteria of the initial backup profile. The CDP backup list includes items that have been modified since the initial backup process began. The data that is the most critical to a user is often the most recently modified data. Thus, the CDP module preferentially performs a backup of items on the CDP backup list.

Abstract: In a DBMS, in response to a request from application programs, a base table update function updates a base table and a recovery start point, and a log recording function records update logs for the base table. Then, at predetermined timing, a backup function outputs the content of the base table to a backup file and copies the recovery start point associated with the base table to a recovery start point. Subsequently, when a user has specified a quiesce point and the base table, a copy generation function generates a target table that is a copy of the base table at the quiesce point by updating the backup file of the specified base table with ones of the update logs from the recovery start point to the quiesce point.

Abstract: File system disaster recovery techniques provide automated monitoring, failure detection and multi-step failover from a primary designated target to one of a designated group of secondary designated targets. Secondary designated targets may be prioritized so that failover occurs in a prescribed sequence. Replication of information between the primary designated target and the secondary designated targets allows failover in a manner that maximizes continuity of operation. In addition, user-specified actions may be initiated on failure detection and/or on failover operations and/or on failback operations.

Abstract: Content platform management is enhanced by logically partitioning a physical cluster that comprises a redundant array of independent nodes. Using an interface, an administrator defines one or more “tenants” within the archive cluster, wherein a tenant has a set of attributes including, for example, namespaces, administrative accounts, data access accounts, and a permission mask. A namespace is a logical partition of the cluster that serves as a collection of objects typically associated with at least one defined application. Each namespace has a private file system such that access to one namespace (and its associated objects) does not enable a user to access objects in another namespace. A namespace has capabilities (e.g., read, write, delete, purge, and the like) that a namespace administrator can choose to enable or disable for a given data account.

Abstract: Techniques to modify file descriptors for content files are described. An apparatus may comprise a processor circuit and a file descriptor application operative on the processor circuit to manage file descriptors for content files, the file descriptor application arranged to generate a file descriptor for a content file in accordance with a universal file descriptor model, the universal file descriptor model to comprise a file descriptor surface with multiple file descriptor tiles to present corresponding content parts from the content file, with at least one of the file descriptor tiles defining a content part class representing homogeneous content parts from heterogeneous content file types. The file descriptor application may also comprise a file descriptor editor component arranged to allow modifications to the file descriptor. Other embodiments are described and claimed.

Abstract: A network storage server implements a method to perform transactional failover of data sets. Multiple storage objects are organized into primary and secondary data sets, and a disaster recovery policy is configured for failing-over a primary data set to a secondary data set. A failover operation is defined for the disaster recovery policy. The failover operation includes multiple failover actions. During a failover situation, the failover operation is invoked to fail-over the primary data set. The failover operation is transactionally processed to ensure that all failover actions of the failover operation are performed in a single transaction.

Abstract: A disaster recovery system, including a target datastore for replicating data written to source datastores, and a checkpoint engine (i) for transmitting, at multiple times, quiesce commands to a plurality of host computers, each quiesce command including a timeout period that is adjusted at each of the multiple times, (ii) for determining, at each of the multiple times, whether acknowledgements indicating that a host has successfully stopped writing enterprise data to the source datastores, have been received from each of the host computers within the timeout period, (iii) for marking, at each of the multiple times, a cross-host checkpoint in the target datastore and reducing the timeout period for the quiesce commands at the next time, if the determining is affirmative, and (iv) for increasing, at each of the multiple times, the timeout period for the quiesce commands transmitted at the next time, if the determining is not affirmative.

Abstract: The present disclosure provides for efficiently creating a full backup image of a client device by efficiently communicating backup data to a backup server using a change tracking log, or track log. A present full backup image can be created using a track log that is associated with a previous full backup image. The client device can determine whether files, which were included in the previous full backup image, have or have not changed using the track log. The client device can transmit changed file data to the backup server for inclusion in the present full backup image. The client device can also transmit metadata identifying unchanged file data to the backup server. The backup server can use the metadata to extract a copy of the unchanged file data from the previous full backup image for inclusion in the present full backup image.

Abstract: A method for reading data from data storage is disclosed. A prefetch hint identifying a chunk of data a requesting node anticipates the requesting node will request that a controller retrieve from data storage is received. The prefetch hint is stored in a buffer at the controller. A determination that the prefetch hint is ready for processing is made. The determination is based at least in part on an offset or other data indicating a place of the chunk of data within a sequence of related chunks of data one or more of which may have been read previously into a cache of the controller. The prefetch hint is processed in response to determining that the prefetch hint is ready for processing, including by reading the chunk of data from a data storage of the controller and storing the chunk of data in the cache.

Abstract: In one embodiment, a system includes a critical partitioned dataset extended (PDSE) stored to memory of the system; logic adapted for protecting the critical PDSE by creating a copy of the critical PDSE, referred to as a PDSE copy; logic adapted for providing a critical dataset redundancy (CDR) task with exclusive access to the PDSE copy; logic adapted for providing a replacement critical PDSE by redirecting corralled connections to the PDSE copy; logic adapted for protecting the replacement critical PDSE by creating a copy of the replacement critical PDSE, referred to as a replacement PDSE copy; and logic adapted for providing the CDR task with exclusive access to the replacement PDSE copy.

Abstract: In a DBMS, in response to a request from application programs, a base table update function updates a base table and a recovery start point, and a log recording function records update logs for the base table. Then, at predetermined timing, a backup function outputs the content of the base table to a backup file and copies the recovery start point associated with the base table to a recovery start point. Subsequently, when a user has specified a quiesce point and the base table, a copy generation function generates a target table that is a copy of the base table at the quiesce point by updating the backup file of the specified base table with ones of the update logs from the recovery start point to the quiesce point.

Abstract: Aspects of the present invention provide a solution for implementing disaster recovery for an application. A subscription backup site for the application is selected from among a plurality of sites. The site that is selected will have a virtual space that is able to accommodate the workload requirements for the application. The application is deflated on the site in such as way as to operate in a dormant state. In the dormant state, the application has a small fraction of its required resources allocated to it. Thereafter, when disaster recovery is needed, the application can be inflated on the subscription backup site by allocating resources to enable the application to execute on the subscription backup site.

Abstract: A system and method for determining media to be exported out of a media library is described. In some examples, the system determines a media component to be exported, determines the media component is in the media library for a specific process, and exports the media component after the process is completed.

Abstract: A method for codec-based recovery of a video, which includes recovering an image by combining image decoding information and non-overwritten image frames, is provided. The method includes: a cluster extraction step of extracting a pre-cluster region; a region extraction step of extracting, from the pre-cluster region extracted in the cluster extraction step, an M frame region encoded using an MPEG-4 visual codec and an M decoding region; a combining step of combining the M frame region and the M decoding region extracted in the region extraction step and listing the combination; and a recovering step of decoding the M frame region and the M decoding region, listed in the combining step, to be recovered as an image.

Abstract: Virtual defragmentation in a deduplication vault. In one example embodiment, a method of virtual defragmentation in a deduplication vault includes a virtual defragmentation phase. The virtual defragmentation phase includes accessing file system metadata (FSM) blocks included in a backup of allocated blocks of a source storage and reordering block references in the FSM blocks to match the order of the corresponding blocks as stored in a deduplication vault storage.

Abstract: A method and an apparatus for splitting and recovering data in a power system are provided in the invention. The method includes the steps of setting a first database and a data recovery unit in a platform layer of the power system. The first database runs in a memory of the power system and is composed of the real-time image in the memory of a grid model and static parameters of a second database. The first database is used to provide the inquiry service of the grid model and static parameters for the power system. The data recovery unit is responsible for all of the associated read-write operations with the second database. After data are written into, the data recovery unit stores the data as historical data according to the time scale characters, and writes the historical data to the second database when the second database is normal.

Abstract: Computer-based methods, computer-readable storage media and computer systems are provided for optimizing integration flow plans. An initial integration flow plan, one or more objectives and/or an objective function related to the one or more objectives may be received as input. A computing cost of the initial integration flow plan may be compared with the objective function. Using one or more heuristics, a set of close-to-optimal integration flow plans may be identified from all possible integration flow plans that are functionally equivalent to the initial integration flow plan. A close-to-optimal integration flow plan with a lowest computing cost may be selected from the set as a replacement for the initial integration flow plan.

Abstract: A system and method for restoring site collections stored in different content databases of a web application are disclosed. A restoration GUI may be displayed. Displaying the restoration GUI may include determining a plurality of databases used for the web application. For each respective database of the plurality of databases, one or more site collections stored in the database may be determined. Displaying the graphical user interface may further comprise displaying an aggregated view of the site collections stored in each database of the plurality of databases. The aggregated view may enable each site collection to be selected for restoration.

Abstract: A storage system comprises a second NAS storage apparatus comprising a processor and a storage medium and a third NAS storage apparatus for migrating an object managed by a first NAS storage apparatus. The processor stores path information of an object for which migration has started after including the path information in object management information, in the storage medium prior to migrating the object entity to the third NAS storage apparatus. The processor, after receiving the object entity from the first NAS storage apparatus and migrating the object entity to the third NAS storage apparatus, stores the third NAS storage apparatus path information to the object entity in the object management information, and reflects the management information in the third NAS storage apparatus.

Abstract: In one aspect, a method includes providing a first storage volume to receive I/Os from a host and having a device ID, providing a second storage volume to receive the I/Os and having a device ID and performing a recovery that includes rebooting the host and recognizing, at the host, the second storage volume as the first storage volume using the device ID of the second storage volume being identical to the device ID of the first storage volume. The first storage volume is in an active mode and the second storage volume is in a passive mode.

Abstract: A system and method for restoring multiple content databases of a web application are disclosed. A restoration GUI may indicate one or more available recovery times. User input selecting a particular recovery time may be received. The selected recovery time may correspond to a first time when a first database was backed up. The system may determine that the web application also included one or more other databases in addition to the first database at the first time. Information indicating the first database together with the one or more other databases may be displayed in association with the selected recovery time in the graphical user interface.

Abstract: A technique for maintaining a transaction history is described. This transaction history includes a sequence of commands or operations in an electronic-design-automation (EDA) environment. For subsets of one or more operations in the sequence of operations, the transaction history includes an associated transaction name, as well as a state of the of the subset, which is open after an initial EDA operation in the subset has been performed and is closed after a last EDA operation in the subset has been performed. This transaction history can be displayed in a window in a graphical user interface, and facilitates undoing and/or rolling back of changes to the data associated with one or more subsets. For example, if an error is detected, roll back of one or more subsets to a known software state or condition prior to the operations in the one or more subsets may be performed without user instructions using the transaction history.

Abstract: An information processing apparatus includes an authentication unit configured to identify a user who uses a data processing apparatus, a storage unit configured to store user identification information for identifying the user who is identified by the authentication unit and is identified as not having ended using the data processing apparatus, and an acquisition unit configured to, in accordance with the user identification information stored in the storage unit, acquire from the data processing apparatus information about using of the data processing apparatus by the user identified with the user identification information that has not been acquired during the state in which communication with the data processing apparatus is unavailable.

Abstract: A computer-implemented method for performing backups may include identifying a volume of data targeted for backup. The computer-implemented method may also include identifying at least one data object within the volume of data. The computer-implemented method may further include locating a copy of the data object within an archival data store. The computer-implemented method may additionally include backing up a reference to the copy of the data object within the archival data store instead of backing up the data object. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: A method of performing data management in a computing system comprises performing a checkpointing operation comprising storing checkpoint of the computing system, writing a plurality of nodes in a plurality of node blocks in a sequential write method after the checkpointing operation, each of the plurality of nodes comprising position information of a next node block, and during a subsequent recovery operation, selecting a node for recovery by scanning of the plurality of node blocks using the position information.

Abstract: A computer-implemented method for managing application availability. The method may include identifying an application running on a first cluster node of a failover cluster and copying configuration data of the application to a storage location accessible by a second cluster node of the failover cluster. The method may also include detecting failure of the first cluster node, restoring the configuration data to the second cluster node, and executing the application on the second cluster node in accordance with the configuration data. Various other methods, systems, and computer-readable media are also disclosed herein.

Abstract: An apparatus, system, and method are disclosed for data management. The method includes writing data in a sequential log structure. The method also includes receiving a time sequence request from a client. The method further includes servicing the time sequence request based on a temporal order of the data in the sequential log structure.

Abstract: In a system for storing and retrieving a plurality of records, the plurality of records associated with a ledger, a client issues read and write requests associated with one of the plurality of records, a plurality of record servers responds to the requests received from the client, and a management server maintains and coordinates, between the client and the record servers, information associated with the ledger, records, and record servers.

Abstract: Techniques for recovering Mobile Internet Protocol (IP) session(s) of a mobility agent in a Mobile IP network are described herein. In one embodiment of the invention, for each mobility session associated with a mobility agent, the mobility agent distributively backs up mobility agent specific information to the mobility agent peer associated with that mobility session. The mobility agent specific information is not used by the mobility agent peer. Upon the mobility agent inadvertently losing at least one mobility session, the mobility agent recovers the stored mobility agent specific information associated with those sessions from the mobility agent peers respectively associated with those sessions. Other methods and apparatuses are also described.

Abstract: A computer-readable recording medium stores a cluster system control program controlling a cluster system in which clustered nodes are connected to a shared disk having a journaling file system. The cluster system control program causes a computer to execute a request reply information generation procedure for, when a request is accepted from a client, generating request reply information including an identification number identifying the request and reply data to respond to the request from the client, and a saving procedure for saving the request reply information generated by the request reply information generation procedure in the journaling file system.

Abstract: A method and apparatus for dynamically managing non-volatile memory items in a wireless device, the method comprising the steps of: checking the non-volatile memory items for a unique identifier item; if the unique identifier item exists, comparing an identifier stored within the unique identifier item with a software identifier located in software on the wireless device; and if the unique identifier item does not exist or if the identifier is different from the software identifier, performing the steps of: updating the non-volatile memory items; and writing the software identifier to the unique identifier item. The method may further include a rollback scheme for previous software versions.

Abstract: A method and apparatus for managing data loss due to policy violations in temporary files is described. In one embodiment, the method includes monitoring, by a client agent, information content on a client for violations of a policy. The method further includes determining, by the client agent, that a violation of the policy has occurred for content of a temporary file of an application. In one embodiment, the policy violation of the temporary file is correlated, by the client agent, with an original file of the application.

Abstract: Hierarchical recovery of failed computing nodes to operative computing nodes within a cluster of computing nodes is managed by initiating a recovery leader at an operative node that retrieves management information from the operative nodes and applies the management information to recover filesets of a meta-fileset in a hierarchical filesystem. The use of hierarchical filesets throughout the cluster provides more rapid failover by distributing recovery load across computing nodes and supporting recovery of nodes in parallel.

Abstract: Techniq ues for recovering a virtual machine are disclosed. In one particular embodiment, the techniques may be realized as a method for recovering a virtual machine comprising the steps of selecting a first backup copy of a virtual machine in a first data store, selecting a second data store; enabling use of the virtual machine by reading from the first data store and writing to the second data store, selecting a second backup copy of the virtual machine, and migrating the virtual machine from the second backup copy to the second data store.

Abstract: Technologies are described herein for providing information lifecycle management (ILM)-assisted synchronous replication between a first storage server having a first current state and a second storage server having a second current state. For example, a notification is received at the first storage server that indicates the second storage server has resumed operations following a failure that occurred at a failure time. At this time, the first storage server is in the first current state and the second storage server is in the second current state that is different than the first current state. Then, ILM data for the first storage server is retrieved, and at least one block of data on the first storage server that was accessed after the failure time is identified. After identifying the at least one block of data, the identified block of data is re-synchronized between the first storage server and the second storage server.

Abstract: A storage control apparatus in cooperation with a plurality of controlled storage apparatus arranged in a cascade of point-in-time copy relationship. The apparatus includes: a rate control component operable to set a desired rate for cleaning a first target one of the plurality of controlled storage apparatus; a comparator component in communication with the rate control component to identify discrepant bits associated with first and second targets; and a copy initiator, responsive to the comparator component to initiate a copy operation responsive to the identified discrepant bits.

Abstract: A method for file lock recovery in a distributed computer system. The method includes executing a distributed computer system having a plurality of nodes comprising a cluster, and initiating a network file system server migration from one node of the cluster to a different node of the cluster. A migration count is incremented, wherein the migration count is stored at each of the nodes comprising the cluster. File lock services are paused at each of the nodes comprising the cluster. The network file system server migration is completed at the different node of the cluster. The migration count is then decremented in response to the completion. File lock services are then resumed at each of the nodes comprising cluster.

Abstract: A computer readable storage medium includes executable instructions to read source node transaction logs to capture transaction data, including local transaction data, global transaction identifiers and participating node data. The global transaction identifiers and participating node data are stored in target node queues. The target node queues are accessed to form global transaction data. Target tables are constructed based upon the local transaction data and the global transaction data.

Abstract: A computer-implemented method for restoring multi-tier applications may include (1) identifying a request to restore a multi-tier application from a backup of the multi-tier application, the multi-tier application including a plurality of individually relocatable components, (2) in response to the request, retrieving a configuration data store from the backup, the configuration data store including a topology of the plurality of individually relocatable components, (3) parsing the configuration data store to extract at least a portion of the topology from the configuration data store, and (4) restoring at least a portion of the multi-tier application based on the portion of the topology. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Pipelined data replication for disaster recovery is disclosed. An example pipelined data replication method for disaster recovery disclosed herein comprises sending replicated first data from a primary processing environment to a secondary processing environment for backup by the secondary processing environment, the replicated first data being a replica of first data in the primary processing environment, processing the first data in the primary processing environment prior to the backup of the replicated first data by the secondary processing environment being confirmed, and preventing a result of the processing of the first data from being released by the primary processing environment until the backup of the replicated first data by the secondary processing environment is confirmed.

Abstract: An approach for replicating data is provided. A job that modifies data objects in a first system to generate a first set of changed data objects is determined to be a candidate for a job replication. Based on the job being a candidate for job replication, attributes of the job are retrieved, the retrieved attributes are sent to a second system, and an execution of the job by the second system is initiated as part of the job replication. The execution of the job causes data objects included in the second system to be modified to generate a second set of changed data objects as a replication of the first set of changed data objects.

Abstract: A method of redirecting a request (R_act) sent by a terminal equipment (STB) for control of a data stream (FL0) broadcast by a source (HE) in a telecommunications network. The method comprises: on reception of a request to control a data stream sent by a terminal equipment (STB), a step of obtaining info cation representing a current data stream control capacity for a plurality (11) of broadcast servers; a step of selecting, with the aid of the above information, a server (NTSSk0) from said plurality of servers able to control said data stream (FL0) broadcast by the source, a step of sending a request to capture this data stream to the selected server if it is not already capturing the data stream for at least one other terminal equipment; and a step of redirecting the control request to the selected server.

Abstract: Techniques used in an automatic failover configuration having a primary database system, a standby database system, and an observer for preventing divergence among the primary and standby database systems while increasing the availability of the primary database system. In the automatic failover configuration, the primary database system remains available even in the absence of both the standby and the observer as long as the standby and the observer become absent sequentially. The failover configuration further permits automatic failover only when the observer is present and the standby and the primary are synchronized and inhibits state changes during failover. The database systems and the observer have copies of failover configuration state and the techniques include techniques for propagating the most recent version of the state among the databases and the observer and techniques for using carefully-ordered writes to ensure that state changes are propagated in a fashion which prevents divergence.

Abstract: A system and method is provided for reconstructing one or more collections of objects across platforms. More particularly, Java Annotations are used to assist a Web Services Description Language (WSDL) wizard in reconstructing a collection of objects. In implementation, the system and method parses the object types such that a wizard can recreate or reconstruct the collection of objects for use by a receiving service. The method comprises reconstructing a collection using one or more annotations that document a base object of the collection.

Abstract: A system and method for providing scaleable recovery for a multiplexed transactional log. Unlike a dedicated log that includes log data of only one client, a multiplexed transactional log may include log data from multiple clients. In a multiplexed transactional log, log data from different clients may be multiplexed into the multiplexed transactional log in any order. The multiplexed log is maintained for multiple clients using a scaleable logging process. After a system failure, the multiplexed log is recovered using a scaleable recovery process. The scaleable recovery process includes an end-of-log locating process for locating the end of the multiplexed log and each of the virtual logs with the multiplexed log. The end-of-log locating process is also scaleable.

Abstract: Methods and systems for transferring a host image of a first machine to a second machine, such as during disaster recovery or migration, are disclosed. In one example, a first profile of a first machine of a first type, such as a first client machine, is compared to a second profile of a second machine, such as a recovery machine or a second client machine of a second type different from the first type, to which the host image is to be transferred, by a first processing device. The first and second profiles each comprise at least one property of the first type of first machine and the second type of second machine, respectively. At least one property of a host image of the first machine is conformed to at least one corresponding property of the second machine. The conformed host image is provided to the second machine, via a network. The second machine is configured with at least one conformed property of the host image by a second processing device of the second machine.

Abstract: First and second partial files are read from first and second storage media, respectively, irrespective of a sequence in which the first and second storage media were originally written relative to one another. The first partial file forms a first portion of a complete file. The second partial file forms a second portion of the complete file. The first and second partial files are combined to extract and form the complete file, without dependence on re-reading the first and second storage media.

Abstract: In one aspect, dynamic determination generates a storage resource graph corresponding to a storage topology. The generating may comprise iterating through storage resources in the storage topology and using a discovery handler to generate a node in the storage resource graph corresponding to each of the iterated storage resources. Dynamic determination generates an operation graph by iterating through nodes in the storage resource graph and using an operating handler to generate operation-specific metadata corresponding to each iterated node of the storage resource graph. Dynamic generating executes the operation graph in a way specific to the operation.