Abstract: In one aspect, a method includes storing a database on a storage array, determining a plurality of most used values in the database, forming a table using the plurality of most used values and compressing data in the database according to the table. In another aspect, an apparatus includes electronic hardware circuitry configured to store a database on a storage array, determine a plurality of most used values in the database, form a table using the plurality of most used values and compress data in the database according to the table. In a further aspect, an article includes a computer-readable medium that stores computer-executable instructions. The instructions cause a machine to store a database on a storage array, determine a plurality of most used values in the database, form a table using the plurality of most used values and compress data in the database according to the table.

Abstract: Described embodiments provide systems and methods for operating a storage system. One or more data replicas of production data of the storage system are generated. For each of the one or more data replicas, an associated hash value is generated. The one or more data replicas are stored in a replica storage of the storage system, and the associated hash values are stored as journal data associated with the respective data replica. Each data replica is verified based upon the hash value retrieved from the journal data.

Abstract: In one embodiment, a method includes replicating a production volume on a plurality of replica volumes. Each replica volume is stored on a respective storage array with a respective journal. The replicating includes writing data to a do stream of each journal written to the production volume, reading from the do stream of each journal, reading undo data that will be overwritten by the data in the do stream, distributing the undo data across the journals and writing the data from the do stream from each journal to the respective replica volume. A number of journals less than a total number of journals can be used to access data in a full journal.

Abstract: A history of requests issued to an application executing in a production environment is stored. The application includes an event logging option set to record a first level of detail in a first log file. While the application is executing in the production environment, a determination is made that the application may have a bug. A backup of the application is restored to a test environment. The event logging option in the restored application is changed to record a second level of detail, greater than the first level of detail, in a second log file. The history of requests is replayed against the restored application having the changed event logging option to generate the second log file.

Abstract: Described embodiments provide devices, systems and methods for operating a storage system. An object store located at the replication site stores data objects associated with data stored in storage of the production site. The replication site may generate a plurality of points in time (PITs) from the data objects and identify a PIT from the plurality of PITs.

Abstract: One embodiment is related to a method for determining an optimal resource configuration combination, comprising: (1) measuring performance of an application with a production resource configuration combination and its associated cost; (2) simulating historical workloads associated with the application with one or more candidate resource configuration combinations using idle resources; (3) selecting one of the candidate resource configuration combinations as a new production resource configuration combination based on cost and performance measurements and comparisons; (4) applying the new production resource configuration combination to a production environment; and (5) monitoring performance of the application with the new production resource configuration combination to confirm that it meets desired performance targets, wherein operations (1) to (5) are performed on a Platform as a Service (PaaS) platform.

Abstract: A computer program product, system, and method for determining compression performance data, an expected I/O operations per second (IOPS) value, an expected data set size, and skew data for each of the logical data sets; determining resource requirements for each of the logical data sets using the corresponding skew data, compression performance data, expected data set size, and expected IOPS value; and determining, based on the resource requirements determined for each of the logical data sets, a set of resources for a storage array that can handle the workload.

Abstract: Described embodiments provide systems and methods for operating a storage system. Writeable snapshot replicas of a production site of the storage system are periodically generated during a snapshot interval. The production site includes a production volume, a production memory, and at least one production application. Input/output (I/O) requests of the at least one production application are saved during the snapshot interval. A test environment is initiated with the writeable snapshot, the test environment comprising a test volume, a test memory, and at least one test application. The at least one test application is run in the test environment and the saved I/O requests of the at least one production application are replayed to the at least one test application in the test environment. Output data is provided from the test environment to the writeable snapshot.

Abstract: A method, computer program product, and computing system for defining one or more computing system requirements for desired data storage array. One or more design criteria is defined for the desired data storage array. At least one recommended data storage array is identified for the desired data storage array based, at least in part, upon the one or more computing system requirements and the one or more design criteria.

Abstract: Certain database structures and operations are recognized in order to generate hints for a tiered storage array. Historical snapshots of a database data dictionary are searched for patterns corresponding to the structures and operations. After a structure or operation is identified, a corresponding set of extents is identified. Logic predicts future activity associated with the extents, and a corresponding hint is provided to the storage array. Statistical information associated with the identified structure or operation may be maintained and updated to facilitate prediction of activity.

Abstract: According to one embodiment, a first message is received from a first application executed by a processor, the first message to be sent to a second application. A backup agent transmits the first message to a backup storage system that is associated with the first application. The backup agent forwards the first message to a first messaging application instance of a messaging sub-system associated with the first application. The messaging sub-system is to send the first message to a second messaging application instance of the messaging sub-system associated with the second application using a predetermined messaging protocol.

Abstract: Described embodiments provide systems and methods for encrypting journal data of a storage system. At least one key is generated, each key having an associated key identifier. The at least one key and the associated key identifiers are stored to a key store. User data is read from a replica volume of the storage system. The read user data is encrypted with an associated key. Encrypted data is written to a journal associated with the replica volume. The key identifier of the associated key is written to the journal.

Abstract: A computer implemented method, system, and computer program product comprising splitting IO from a LUN on the production site to a data protection appliance (DPA), accumulating IO at the DPA until a threshold of IO is reached, and upon reaching the threshold, sending an object containing the IO to an object store.

Abstract: A storage system comprises a production site in operable communication with a replication site, and an object store, comprising a plurality of data objects associated with data stored in at least one data storage entity of the production site, disposed at the replication site. The replication site is configured to generate a virtual access point in time (PIT) based at least in part on the plurality of data objects, by providing a plurality of nodes in operable communication with the storage system, where each respective node is configured to, substantially concurrently, perform a MapReduce operation to generate a respective first set of disk objects based on the plurality of data objects, and to create a respective set of metadata objects. The first set of disk objects and the first set of metadata objects are merged together into a virtual access PIT from each of the plurality of parallel nodes.

Abstract: Example embodiments of the present invention relate to methods, systems, and a computer program product for storing data compressed according to a level of activity of a data set. The method includes evaluating a level of activity for a data set and selecting a compression algorithm according to the level of activity of the data set. The data set then may be compressed according to the selected compression algorithm and the compressed data stored in a data storage system.

Abstract: In general, the invention relates to a method and system for migrating tables in databases. The method may include calculating a first plurality of migration factors for a first set of tables in a source database using a plurality of pre-calculated factors and a first plurality of dynamically-calculated factor, where each of the first plurality of migration factors is associated with one of the first set of tables. The method may further include selecting a first table from the first set of tables to migrate based on the first plurality of migration factors; and migrating the first table to a target database.

Abstract: In one example, a method includes generating an enhanced copy, which includes application data generated from using an application, the application, a configuration of the application and runtime settings to run the application. The method also includes restoring at least one of the application, the configuration of the application and the runtime settings using the enhanced copy.

Abstract: A data storage subsystem includes a data storage array and a host device in communication with the data storage array. Applications on servers and user terminals communicate with the host to access data maintained by the storage array. In order to enhance performance, the host includes a cache resource and a computer program including cache configuration logic which determines whether an IO received from an application is associated with a predetermined type of business process, and configures the cache resource to store data associated with the received IO where it is determined that the IO is associated with the predetermined type of business process, thereby enabling the data to be available directly from the host without accessing the storage subsystem in response to a subsequent Read request.

Abstract: Described embodiments provide systems and methods for operating a storage system. One or more production volumes of the storage system are selected for continuous replication. A number, N, is selected that is associated with a number of damaged volumes the storage system can sustain and maintain data consistency. Write transactions from a host to an associated one of the selected one or more production volumes are intercepted. The intercepted write transactions are sent to the associated production volume and to a plurality of copy volumes. When acknowledgments of the write transaction have been received from N copy volumes, the write transaction is acknowledged to the host.

Abstract: Described are techniques for determining data storage system configurations. Inputs are provided to a data storage system configuration generator. The inputs include first inputs and second inputs. The first inputs include a performance objective, a storage capacity, and input(s) characterizing an I/O workload. The second inputs characterize performance of data storage system components and costs of the data storage system components. First processing is performed by the data storage system configuration generator in accordance with the inputs to determine a set of one or more candidate data storage system configurations. The data storage system configuration selects, in accordance with one or more criteria, a first candidate data storage system configuration from the set.