摘要:
Data processing apparatus comprising: a chunk store containing specimen data chunks 6, a manifest store containing at least one manifest that represents at least a part of a data set and is divided into manifest segments, each comprising at least one reference to at least one of said specimen data chunks, the data processing apparatus being operable to: process input data into input data segments, each comprising one or more input data chunks: and identify at least one of said manifest segments having at least one said reference to a said specimen data chunk corresponding to an input data chunk of at least one of the input data segments.
摘要:
An apparatus, for connection to a storage device, comprising: a module for communication with a software application and operable to receive instructions to copy data to the storage device; a chunking and identifier generation module operable to receive the data, to process the data into one or more chunks, to generate a first chunk identifier, representative of the identity of a first of the or each chunk of data and, upon processing of the data, to initiate the issuance of a confirmation signal to the software application indicating that the data has been copied to the storage device; and an interface for communication with the storage device, wherein the interface is operable to send the first chunk identifier to the storage device, and to send the first chunk of data to the storage device upon receipt of a transfer instruction from the storage device.
摘要:
Example implementations relate to storing manifest portions in a metadata cache. An example includes receiving, by a storage controller, a read request associated with a first data unit. In response to receiving the read request, the storage controller stores a manifest portion in a metadata cache, the stored manifest portion comprising a plurality of records, the plurality of records including a first record associated with the first data unit. The storage controller determines storage information of the first data unit using pointer information included in the first record of the stored manifest portion, and replaces the pointer information in the first record with the determined storage information of the first data unit.
摘要:
A technique includes providing an interface to a client of a storage appliance to access a backup data object that is stored on the storage appliance and using the client to communicate with the storage appliance to control at least one aspect of an operation to replicate at least part of the backup data object.
摘要:
Data processing apparatus comprising: a chunk store having a plurality of chunk sections, each operable to store specimen data chunks, the apparatus being operable to: process an input data set into one or more input data chunks; identify a specimen data chunk in one of said chunk sections which corresponds to a first input data chunk; identify a second input data chunk not corresponding to a specimen data chunk in the chunk store; and store the second input data chunk as a specimen data chunk in proximity to the identified specimen data chunk corresponding to the first input data chunk.
摘要:
A group of headless computer entities is formed via a local area network connection by means of an aggregation service application, operated on a headless computer entity selected as a master entity, which propagates configuration settings for time zone, application settings, security settings and the like across individual slave computer entities within the group. A human operator can change configuration settings globally at group level via a user interface display on a conventional computer having a user console, which interacts with the master headless computer entity via a web administration interface. Addition and subtraction of computer entities from a group are handled by an aggregation service application, and interlocks and error checking is applied throughout the group to ensure that no changes to a slave computer entity are made, unless those changes conform to global configuration settings enforced by the master headless computer entity.
摘要:
Data processing apparatus comprising: a chunk store containing specimen data chunks, a manifest store containing at least one manifest that represents at least a part of a data set and that comprises at least one reference to at least one of said specimen data chunks, a sparse chunk index containing information on only those specimen data chunks having a predetermined characteristic, the processing apparatus being operable to process input data into input data chunks and to use the sparse chunk index to identify at least one of said at least one manifest that includes at least one reference to one of said specimen data chunks that corresponds to one of said input data chunks having the predetermined characteristic.
摘要:
A method of installing an operating system into a computer entity comprising at least one data storage device, a primary operating system and an emergency operating system, the method characterized by comprising the steps of: creating a copy of the primary operating system on an operating system back-up area of the data storage device of the computer entity; operating the computer entity using the emergency operating system; storing data of the computer entity on a user settings archive of the data storage device; replacing the primary operating system with the copy of the primary operating system; automatically checking for corrupted data on the user settings archive; restoring settings data of the computer entity from the user settings archive. In the event of a failure involving data corruption, application data may be deleted and recreated in a known good default state.
摘要:
In an embodiment, the present invention is directed to a system for intermediating communication, with a moveable media library, utilizing partitions, wherein the moveable media library comprises an internal controller that is, in part, operable to control a robotics subsystem in response to commands received via a control interface. Such a system comprises: a bridge unit that is operable to pass library commands to an external controller, wherein the bridge unit is operable to associate a plurality of logic units (LUNs) with the external controller. The external controller is operable to process library commands from the bridge unit, wherein the external controller associates each partition of a plurality of partitions with a respective LUN of the plurality of LUNs, and the external controller is further operable to translate received commands from the bridge unit for communication to the internal controller according to the plurality of partitions.
摘要:
Example implementations relate to storing manifest portions in a metadata cache. An example includes receiving, by a storage controller, a read request associated with a first data unit. In response to receiving the read request, the storage controller stores a manifest portion in a metadata cache, the stored manifest portion comprising a plurality of records, the plurality of records including a first record associated with the first data unit. The storage controller determines storage information of the first data unit using pointer information included in the first record of the stored manifest portion, and replaces the pointer information in the first record with the determined storage information of the first data unit.