Abstract: Methods, devices and systems enable restoring a database system more efficiently. A server computing device may be configured to determine a recovery time interval, periodically review database records to identify a database record that has not been updated within a most recent recovery time interval, add the identified database record to a journaling log, and update the identified database record to include information identifying a time at which the database record was last added to the journaling log. After detecting a failure event, the server computing device may perform the database operations identified in the journaling log to restore the database system.

Abstract: A method is used in recovering duplicate blocks in file systems. A duplicate file system block is detected in a file system. The duplicate file system block is referred by a first inode associated with a first file of the file system and a second inode associated with a second file of the file system. Metadata of the duplicate file system block is evaluated. Based on the evaluation, a set of inodes in the file system is determined. Each inode of the set of inodes refer to the duplicate file system block. Based on the determination, the set of inodes is updated.

Abstract: Systems and methods for restoring file system objects from image level backups of servers. The method receives a selection of an image level backup of a source, file system object(s) to be restored, and restoration parameters identifying a destination. The method initializes and attaches a virtual storage to a virtual appliance and an associated hypervisor. The method stores virtual storage data changes resulting from the file system object restoration in changes storage. The method preserves file system object information, wherein the file system object information corresponds to the source operating system (OS) and file system. The method preserves file system object information such as permissions and ownership through business logic that ensures that the file system object information for restored file system object(s) on the destination match file system object information from the source, even when the method operates on a host running a different OS than the source server.

Abstract: A plurality of indicators representing a plurality of respective candidate database configurations may be obtained, each of the candidate database configurations including a plurality of database queries and a plurality of candidate database indexes associated with a database table. A portion of the candidate database indexes included in the plurality of database indexes may be selected based on skyline selection. An enumeration of the portion of the plurality of the candidate database indexes may be determined based on a greedy algorithm.

Abstract: The present embodiments relate generally to a computer device, system and method of identifying an application type of unknown data. The method may include: determining that the unknown data corresponds to database information, the database information comprising at least one table with at least one column; for a column of a table in the database information, determining if a column identifier of the column comprises a keyword associated with a particular application type; and if the column identifier comprises the keyword, identifying data stored in the database as belonging to an application that is of the particular application type.

Abstract: A method of classifying and monitoring database operations based on a recovery cost may include receiving an indication of a recoverable operation. A count in a persistent storage, such as a catalog, corresponding to an occurrence of the recoverable operation is incremented.

Abstract: A storage manager that interoperates with a file manager application that integrates with virtualization substantially enables end-user control and storage management of virtual machines (VMs). The storage manager may manage information management operations relative to virtual machines based on and/or in response to messages and/or instructions received from the file manager application. The storage manager may further report results to the file manager application for presentation to the user.

Abstract: A storage system having a plurality of storages. The each of the storages include a memory and a processor coupled to the memory. The processor executes a process including transmitting an update request for data which is commonly stored in the plurality of storages according to a predetermined transmission order indicating a path to transfer the update request. The process includes updating data when receiving an update request from another storage. The process includes changing the predetermined transmission order to a transmission order in which one or more storages included in the path are excluded according to the number of times the update request for the data is received.

Abstract: For adding cooperative file coloring protocols in a data deduplication system using a processor device in a computing environment, a preferred character is represented for file coloring in a file using a code selected from a multiplicity of codes that represent a variety of contexts. The original meaning of the preferred character is retained when representing the preferred character for the file coloring by the code selected from the multiplicity of codes.

Abstract: Techniques are disclosed for managing a cluster of computing nodes following a division of the cluster into at least a first and second partition, where the cluster aggregates local storage resources of the nodes to provide an object store, and objects stored in the object store are divided into data components stored across the nodes. In accordance with one method, it is determined that a majority of data components comprising a first object are stored within nodes in the first partition. It is determined that a majority of data components comprising a second object are stored within nodes in the second partition. Configuration objects are permitted to be performed on the first object in the first partition while denying access to the first object from the second partition, and on the second object in the second partition while denying access to the second object from the first partition.

Abstract: An image forming apparatus is described where restoration of unnecessary data is prevented, and a storage area of the image forming apparatus is effectively utilized. When an option to increase the storage capacity of the image forming apparatus is selected, data backed up by a backup unit is set as data to be restored by a restore unit. When the option to increase the storage capacity of the image forming apparatus is not selected, data indicated by data identification information as being required data is set as data to be restored by the restore unit from among the data backed up by the backup unit.

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: In one aspect, a method includes recovering at least one logical unit of a consistency group in a journal-based replication system without interruption of replication of other logical units in the consistency group, the at least one logical unit being one of a physical logical unit or a virtual logical unit.

Abstract: The various disclosed techniques and equipment relate to synchronizing a subscriber's address books located in a portal and in the subscriber's mobile station, determining the subscription status of a directory number of another party with whom the subscriber intends to communicate, and/or for enabling the subscriber to make a referral to another party who might not be a qualified subscriber.

Abstract: Methods and apparatus for receiving uploaded data from a sender at a receiver. A data deduplication technique is described that may reduce the bandwidth used in uploading data from the sender to the receiver. In the technique, the receiver, rather than the sender, maintains a fingerprint dictionary for previously uploaded data. When a sender has additional data to be uploaded, the sender extracts fingerprints for units of the data and sends the fingerprints to the receiver. The receiver checks its fingerprint dictionary to determine the data units to be uploaded and notifies the sender of the identified units, which then sends the identified units of data to the receiver. The technique may, for example, be applied in virtualized data store systems to reduce bandwidth usage in uploading data.

Abstract: An approach for managing a data package is provided. Network utilization is determined to exceed a threshold. A sender computer determines a hash digest of the data package by using a hash function selected based on central processing unit utilization. If the hash digest is in a sender hash table, then without sending the data package, the sender computer sends the hash digest and an index referring to the hash digest so that a recipient computer can use the index to locate a matching hash digest and the data package in a recipient hash table. If the hash digest is not in the sender hash table, then the sender computer adds the data package and the hash digest to the sender hash table and sends the data package and the hash digest to the second computer to check the integrity of the data package based on the hash digest.

Abstract: A computer implemented system and method for synchronizing a plurality of changes from a source computing device to a destination computing device, have been disclosed. The method involves, determining an initial polling time and a last polled time, checking for an elapse of a preset polling interval from a maximum poll time, polling a source for fetching data after an elapse of a polling interval from the maximum poll time, selecting a plurality of changes from the source computing device, processing the fetched data, writing the processed data at a destination computing device and reporting a status of a synchronization process.

Abstract: A storage device partitions data from a host into multiple partitioned data and distributes, encrypts and stores them together with a parity in multiple memory mediums. This storage device executes processing of restoring the partitioned data or the parity stored in a memory medium subjectable to encryption re-key based on decrypted data of the partitioned data or the parity stored in each memory medium other than the memory medium subjectable to encryption re-key among the multiple memory mediums, storing the restored partitioned data or the parity in a backup memory medium while encrypting the restored partitioned data or the parity with a new encryption key, and thereafter interchanging the backup memory medium and the memory medium subjectable to encryption re-key so that the backup memory medium will be a memory medium configuring the parity group and the memory medium subjectable to encryption re-key will be the backup memory medium.

Abstract: The present invention involves a Universal Geographic Database (“UGD”). The UGD is an automated, central or distributed, registry of real-world locations and location-related information for businesses and other entities, analogous to the registry of domain names for Internet and web sites. By this central registry, businesses and other entities are facilitated to post their location and location-related information in a single place, for all users who need or want it; and users can refer to this single place, via the Internet, Web, and other telecommunications devices, to obtain accurate, complete and timely location and location-based information about the registered businesses and other entities. Each record of the UGD is keyed by a proprietary location address (PLA) based on the World Geographic Referencing System (WGRS), and optionally may have one or more proprietary location addresses (PLAs), which also may serve as keys.

Abstract: An apparatus, system, and method are disclosed for data block usage information synchronization for a non-volatile storage volume. The method includes referencing first data block usage information for data blocks of a non-volatile storage volume managed by a storage manager. The first data block usage information is maintained by the storage manager. The method also includes synchronizing second data block usage information managed by a storage controller with the first data block usage information maintained by the storage manager. The storage manager maintains the first data block usage information separate from second data block usage information managed by the storage controller.

Abstract: A method of defining a backup state of a file system is provided. A change in an electronic file stored on a computer system is detected. If the change is detected, a backup state of the electronic file is updated using an overlay icon associated with the electronic file. The overlay icon is presented in a user interface displaying the file system of the computer system. The backup state indicates that the electronic file is selected for backup processing if the change is detected. If the backup state indicates the electronic file is selected for backup processing, a copy of the electronic file is sent to a second computer system accessible by the computer system using a network.

Abstract: Various systems and methods for restoring data using indexes. For example, one method involves receiving a request that includes a restore criterion. The method involves identifying a storage object in a backup storage device that meets the restore criterion, in response to the request. Detecting the identity of the storage object involves sending a query with the restore criterion to a client computing device that includes an index. The method also involves responding to the request with information identifying the storage object.

Abstract: A system and method for automatically cloning or migrating a computing appliance while maintaining its operational state. A configuration bundle that includes configuration data, software revision level and a list of system updates is used to recover or duplicate a device's operation state. The system and method can also be utilized to migrate a computing appliance between different operating system while maintaining or replicating the previous operational state.

Abstract: This patent application relates to enhanced logical recovery techniques for redo recovery operations of a system with an unbundled storage engine. These techniques can be implemented by utilizing an enhanced logical recovery approach in which a dirty page table (DPT) is constructed based on information logged during normal execution. The unbundled storage engine can include a transaction component (TC) that is architecturally independent of a data component (DC). These techniques can enhance redo recovery operations by mitigating the resources needed to determine whether previously executed operations sent from the TC to the DC are to be repeated in response to a recovery-initiating event. This can include using the DPT to avoid fetching every data page corresponding to every previously executed operation received by the DC during recovery and/or pre-fetching data pages and/or index pages that correspond to PIDs in the DPT.

Abstract: Portions of index information are pulled from a name directory and an attribute directory to form a new subindex data set that is stored as a separate file from the name directory and the attribute directory. The name directory and the attribute directory each being associated with partitioned data set extended (PDSE) data sets stored sequentially in members. Pursuant to an update to the PDSE data sets, a selected portion of an index record of the dataset is stored as a record in the new subindex data set and the storing includes acting on an integrated catalog facility catalog to perform operations relating to allowacation and maintenance of the new subindex data set. An oldest existing record is replaced with a recent version if a determination is made that adding the recent version exceeds a predetermined number of versions. A component of the new subindex data set is recoverable.

Abstract: Techniques for accelerating data movement from a source storage system to a target storage system are described herein. According to one embodiment, a first data stream is received to be transmitted to a remote storage system over a network, the first data stream having multiple data objects, each identified by a data object identifier (ID). A difference is determined between the first data stream and a second data stream that has been previously transmitted to the remote storage system, including identifying one or more data objects that are added, deleted, and/or modified. Differential object information is transmitted to the target storage representing the difference between the first data stream and the second data stream, as well as one or more data objects that are missing in the second data stream without having to transmit all data objects of the first data stream.

Abstract: A method and system for preventing duplicate file uploads in a remote content management system is described. The user device receives a hash value list associated with the files stored in the remote content management system. The user device calculates a hash value associated with new files to be uploaded. The system then compares the hash value(s) associated with the new file(s) to be uploaded with the hash value list received from the remote file storage system. If the hash values of any of the new files to be uploaded match a hash value on the hash value list, then the system prevents the new files from being uploaded to the remote file storage system.

Abstract: Techniques to recover files in a storage network are described. A recovery manager application may manage file recovery operations for a file sharing application. The recovery manager application may comprise a recovery queue component to receive a request to recover a primary file deleted from a primary storage server. The recovery manager application may also comprise a file location component to locate a secondary file stored in a secondary storage server, the secondary storage server to comprise one of multiple secondary storage servers each configured to utilize a different file duplication technique, the secondary file to comprise a copy of the primary file. The recovery manager application may also comprise a file recovery component to retrieve the secondary file from the secondary storage server, and create a recovered primary file based at least in part on the secondary file. Other embodiments are described and claimed.

Abstract: A cluster network environment may comprise a plurality of nodes configured to perform various tasks, such as data I/O, storage, backup, etc. It may be advantageous to improve disaster recovery and reliability by creating backups that may be used to restore the cluster network environment and/or nodes therein. Accordingly, one or more techniques and/or systems are disclosed for restoring a cluster network environment and/or nodes therein. In particular, cluster configuration data, which may be stored in a healthy node or at a remote source, may be used to restore a node affected by an integrity loss. If the integrity loss affects the cluster network environment (e.g., a majority of healthy nodes are lost), then a new cluster network environment may be created from a healthy node or a restored healthy node. The creation of the new cluster network environment may be based at least in part on cluster configuration data.

Abstract: A database rollback processor allows rollback, or rewind, of the data and metadata to a point at which a failover or other metadata change occurred, therefore “rewinding” the metadata to a previous consistent point. The rollback processor identifies transaction entries in a redo log resulting in changes to the metadata. The changes are identified backward to a target recovery time. Transactions affecting the metadata are stored in a stack. The transactions are then backed out of the metadata according to the stack to restore the metadata to the state at the target recovery time. Data changes from the redo log may then be applied to the corresponding metadata as it existed at the target recovery time. Since the target recovery time is not bound by the timing of the snapshots, but rather may be at an arbitrary point chosen as the target recovery time, a failover, replication or recovery operation need not rely on the snapshot time.

Abstract: The present description refers to a computer implemented method, computer program product, and computer system for receiving a start time, selecting one or more database objects for which a database recovery progress report is to be provided, determining, based on an object recovery table generated by the database recovery utility, which of the selected database objects have been recovered since the start time, and outputting a database recovery progress report that identifies at least a number or percentage of the selected database objects that have been recovered by the database recovery utility since the start time.

Abstract: A system comprises a processing device including a storage device. The system further comprises a wireless mobile device (“WMD”) in wireless communication with the processing device. The processing device registers the WMD and stores the registration in the system memory, receives a request for retrieval of data located in the WMD, authenticates the request based on the registration, and retrieves the data wirelessly based on the authentication.

Abstract: A method and apparatus for restoring table data using one or more restoration commands, where the one or more restoration commands are generated at the time a backup of a database comprising the table data is created. The disclosed restoring of table data comprises identifying table data after completion of a backup process on the database and generating one or more commands for restoring the table data where the one or more restoration commands are generated prior to a request to restore the table data.

Abstract: The invention provides a method and device to recover deleted sqlite files on mobile terminal. The invention provides a method to preset several sqlite page feature rules. Perform following steps when a mobile terminal is detected: obtaining the image files of current mobile terminal; analyzing the image files of current mobile terminal and selling the search area; call at least one preset sqlite page feature rule according to the data features in the search area, and matching with the data in the search area based on the said sqlite page feature rule to capture the current sqlite page file fragment deleted by the mobile terminal; finally, decoding the data of sqlite page file fragment deleted on current mobile terminal. The invention provides a solution to obtain valid data from the uncovered page fragment of all deleted sqlite files in the mobile terminal, with a high recovery success rate and integrity.

Abstract: According to some embodiments, a column-oriented in-memory database structure may be established. The database structure may, for example, include a main store and a dictionary compressed delta store. Moreover, the delta store may comprise a value identifier vector and a delta dictionary associated with a column of the database. A transaction associated with the column may then be received and recorded within the delta store. According to some embodiments, entries associated with the transaction may be added to a value log of the value identifier vector and, independently, to a dictionary log of the delta dictionary.

Abstract: Data protection programs are installed at each network host. The programs communicate with each other to scan the hosts and identify duplicate and unique data objects stored at the hosts. Duplicate data objects are maintained on the hosts. Unique data objects are broken into chunks, copied to other hosts, and a parity data is calculated. When a network host becomes unavailable and is replaced with a new network host, duplicate data objects stored on the now unavailable network host may be rebuilt on the new network host using the maintained duplicate data objects on the other hosts. Unique data objects stored on the now unavailable network host may be rebuilt on the new network host using the copied chunks and parity data.

Abstract: A system and method to retrieve information is disclosed. The system may include a processor to run a query application to retrieve selected information from one or more databases. The query application may include a client layer and a presentation layer to interface with the client layer. A database access layer may be provided and an interface layer may be provided to interface between the presentation layer and the database access layer.

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: A method, system, and program product for data replication comprising, building a virtual image of a point in time in a Data Protection Appliance (DPA), taking a storage array based snapshot of a current image, creating a hot pull session and exposing a LUN containing the point in time image at the DPA.

Abstract: A method, article of manufacture, and apparatus for protecting data. In some embodiments, this includes determining a file to recover, looking up an index to find a file record number associated with the file, determining constituent blocks based on the file record number, reconstructing data from the constituent blocks, and storing the data in a storage device.

Abstract: A non-transitory, computer-readable medium storing a program that causes a computer that controls data storage apparatuses respectively storing plural data, and a storing apparatus storing metadata that includes for each of the data, attribute information and storage location information, the process includes receiving a snapshot collection request for a given data group having specified attribute information; determining with respect to the data storage apparatuses and when the collection request is received, whether any of the data of the given data group is stored therein, based on the attribute information and the storage location information; and generating, with respect to each of the data storage apparatuses storing data of the given data group, a snapshot of the plural data stored therein, by controlling the data storage apparatus and further generating a snapshot of the metadata by controlling the storing apparatus.

Abstract: In an example embodiment, updated repository instances are typically developed on a development system, transferred to a testing system, and after testing, transferred to a production system. Such an updated instance may comprise content, sources and a data dictionary. As an updated instance is moved from one system to another, the change is applied to an original instance. A shadow copy of content is kept for the original instance. In another example embodiment, a shadow copy of content is created as part of the change process. The sources and data dictionary may have their own versioning mechanism. To undo the applied change, the sources and data dictionary are rolled back to their pre-change state. The content is retrieved from the shadow copy and restored to the original instance. Finally, stranded data is restored according to appropriate policies.

Abstract: Systems and methods of coalescing and capturing data between events prior to and after a temporal window are disclosed. In an embodiment, a method includes determining a temporal window based on one or more of a user data and an automatically generated data, coalescing data between events prior to the temporal window using a processor and a physical memory and capturing data between events after the temporal window. The coalescing data between events prior to the temporal window may be determined by a set of overlapping operations to a data set, wherein certain operations have non-overlapping sectors which are not coalesced. Shifting a data view around a recovery point through a direction-agnostic roll algorithm that may use a roll-forward algorithm to shift the data view to a time after the recovery point and/or a roll-backward algorithm to shift the data view to a time before the recovery point.

Abstract: A novel and useful system and method of fast history compression in a pipelined architecture with both speculation and low-penalty misprediction recovery. The method of the present invention speculates that a current input byte does not continue an earlier string, but either starts a new string or represents a literal (no match). As previous bytes are checked if they start a string, the method of the present invention detects if speculation for the current byte is correct. If speculation is not correct, then various methods of recovery are employed, depending on the repeating string length.

Abstract: The disclosed techniques include generation of a single index table when backing up data in a first backup format to a backup storage system that uses a second backup format. Using the single index table, a query for a data item can be answered by searching the single index table. The single index table avoids having to search through multiple index tables, each corresponding to a different backup format that may be used for backing up the searched data item.

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: A system, method, and medium for performing incremental backups of a data set within a deduplication storage system. An incremental backup of a data set is initiated, and the changed data items of the data set are deduplicated. An extents catalog is created to fully describe the data set. References associated with the unchanged data items of the data set are retrieved from the extents catalog and then sent to a deduplication engine. The deduplication engine uses the references to retrieve fingerprints associated with the unchanged data items from a previous reference map. Then, the deduplication engine creates a new reference map for the incremental backup and stores the newly generated and retrieved fingerprints in the new reference map.

Abstract: Systems and methods are provided for handling uncorrectable errors that may occur during garbage collection of an index page or block in non-volatile memory.

Abstract: A system for onsite backup of internet-based data is provided. The system includes a central computer, a client computer, a communications link between the central computer and the Internet, and a communications link between the client computer and the Internet. The system also includes at least one database containing a plurality of data records accessible by the central computer, each data record containing a client identification number. Software executing on the central computer receives a data backup request, and software executing on the central computer transmits the data backup to the client computer.

Abstract: Technologies are described herein for providing snapshot-assisted synchronous replication between a first storage server and a second storage server. For example, a notification is received at the second storage server that the first storage server has resumed operations following a failure. At this time, the first storage server is in a first current state and the second storage server is in a second current state. Upon receiving the notification, a common snapshot is identified between the first storage server and the second storage server. Upon identifying the common snapshot, the first storage server is rolled back from the first current state to a previous state according to the common snapshot, and upon rolling back the first storage server from the first current state to the previous state, the first storage server and the second storage server are resynchronized using the common snapshot.