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Document Title |
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7305531 |
Remote copy network
A remote copy network realizes low-cost multi-hop remote copying. Remote copying is executed via a remote copy network (RCN) having a source edge device connected to a source storage and a target...
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7305532 |
Efficient data storage system
A system and method are disclosed for providing efficient data storage. A data stream comprising a plurality of data segments is received. The system determines whether one of the plurality of data...
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7302560 |
Use of NAND flash for hidden memory blocks to store an operating system program
A memory device has a plurality of memory blocks utilized to store data. One of the blocks is used as a hidden memory block to store an operating system program, instead of data. The hidden memory...
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7302539 |
Migrating data in a storage system
A method of managing storage comprises connecting a number of virtual disks to a disk controller loop of a disk controller, and mounting a portion of the number of virtual disks to the disk...
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7302535 |
Data replication in a storage system
For a storage system having plural control units to which plural disk devices are connected, in the method for creating replication in a volume of the disk devices connected to different control...
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7302526 |
Handling memory faults for mirrored memory
Handling a faulting memory of a pair of mirrored memories includes initially causing a non-faulting memory of the pair of mirrored memories to service all read and write operations for the pair of...
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7302541 |
System and method for switching access paths during data migration
The present invention suppresses the generation of redundant I/O and improves the response to the host during data migration. When migrating data from the migration source volume to the migration...
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7302604 |
Remote management commands in a mass storage system
A method for managing activity of a data storage system including a primary storage facility and a secondary storage facility. The method includes mirroring a first logical unit in the primary...
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7302537 |
Apparatus, systems and methods for backing-up information
An apparatus is disclosed. The apparatus includes a controller and a storage device. The storage device is in communication with the controller. The apparatus is configured for communication with...
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7302540 |
Virtual tape storage system having snapshot virtual tape library for disaster recovery testing
A virtual tape storage system includes an original virtual tape library for storing data and includes snapshot virtual tape library (SVTL). The SVTL includes a snapshot of the data stored in the...
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7302538 |
Storage medium for data backup and method for the same
The present invention discloses a writable storage medium with backup module contained therein to backup important data. With this writable storage medium, the user could automatically duplicate...
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7302536 |
Method and apparatus for managing replication volumes
Aspects of the invention provide for at least one first data portion of a first storage device in a system to be updated to a second storage and further replicating the update to a second data...
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7299333 |
Computer system with storage system having re-configurable logical volumes
In order to enable an area of each logical volume to be expanded while continuously using the logical volume and to integrate separate logical volumes in a single continuous area, a storage has...
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7299322 |
Computer system, storage device and method providing intra-storage volume identifiers corresponding to intra-host volume identifiers through volume switching commands
Related plural logical volumes can be used after switching over from the host computer therein. A switching command, which a host computer sends, makes a storage device search for a switching...
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7299332 |
System and method for managing sessions and allocating memory resources used for replication of data in a data storage environment
Disclosed is a system and method for managing sessions and memory resources used for replication of data in a data storage environment. The method includes the steps of determining whether a first...
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7296179 |
Node removal using remote back-up system memory
A method and system for method of removing a node from a multi-node computer. The node receives a system management interrupt (SMI), resulting in a quiescenting of only that node. The SMI receiving...
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7296118 |
Storage device and information management system
Using a snapshot function, a remote copy is efficiently created. Data for a snapshot is converted into a first bitmap of differential data for a remote copy. The conversion is performed in advance...
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7296125 |
Preserving a snapshot of selected data of a mass storage system
Maintaining logically consistent backups using minimal data transfer. A backup, or snapshot, copy of original data is created and stored. A user designates data blocks that are to be backed up in a...
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7293143 |
Efficient non-blocking k-compare-single-swap operation
The design of nonblocking linked data structures using single-location synchronization primitives such as compare-and-swap (CAS) is a complex affair that often requires severe restrictions on the...
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7293039 |
Storage resource management across multiple paths
According to an embodiment of the invention, a filer or other storage server is coupled to a network to store files for users of the network. Agents are coupled to the filer, and performs a scan or...
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7293145 |
System and method for data transfer using a recoverable data pipe
A system for data transfer using a recoverable data pipe includes a data producer, one or more data consumers, a storage device and a data pipe manager. The data producer may be configured to...
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7293146 |
Method and apparatus for restoring a corrupted data volume
Disclosed is a method and apparatus for restoring a corrupted data volume. In one embodiment, the method includes creating a backup copy of the data volume before the data volume is corrupted. Data...
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7293150 |
Method and system for creating and restoring an image file
An image file format and a method of creating and restoring an image file is provided by the present invention. The image file format includes a plurality of streams such as a control stream, a...
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7293068 |
Method and system for storing duplicate data
During recovery of a master system, a mismatch between data in the master system and that in a backup system is obviated quickly to shorten time consumed before resumption of operation of the...
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7293194 |
Method and device for switching database access part from for-standby to currently in use
It is an object of the present invention to use the resources of various sites in an effective manner. The first site has a first DB access part in use. The second site has a second DB access part...
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7290086 |
Method, apparatus and program storage device for providing asynchronous status messaging in a data storage system
A method, apparatus and program storage device for providing asynchronous status messaging in a data storage system Asynchronous events are returned from a target to an initiator in response to a...
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7290103 |
Data processing system
This invention provides a control technique of a data processing system, in which functions of a highly-functional high-performance storage system are achieved in an inexpensive storage system so...
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7290102 |
Point in time storage copy
A storage system permits virtual storage of user data by implementing a logical disk mapping structure that provides access to user data stored on physical storage media and methods for generating...
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7290112 |
System and method for virtualization of processor resources
A system and method for virtualization of processor resources is presented. A thread is created on a processor and the processor's local memory is mapped into an effective address space. In doing...
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7290100 |
Computer system for managing data transfer between storage sub-systems
The source storage 1220 and source path 1230 constituting backup source information of all of the backup data in a computer system 1000, the destination storage 1240 and destination path ...
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7287132 |
Storage system, method of controlling storage system, and storage device
The present invention provides a storage system and a method of controlling the storage system, in which a second site rapidly resumes system process when a first site is damaged. The storage...
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7287137 |
Batched, asynchronous data redundancy technique
A sequence of write transactions are performed at a first storage facility. The write transactions are arranged into a sequence of send batches forwarded to a second storage facility where the...
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7287138 |
Low cost and high RAS mirrored memory
An architecture, method and apparatus for a data processing system having memory compression and two common memories forming either a single unified memory, or a dual memory system capable of...
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7287045 |
Backup method, storage system, and program for backup
A backup method is provided for use with a storage system composed of a memory which stores a control program, a disk drive having an primary volume, a differential volume, and mapping information,...
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7287139 |
Maintenance of persistent data using bitmaps
A system is employed to maintain persistent operation information for implementation on persistent data. Bitmaps are created to track outstanding persistent operations. Should a volume of...
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7284150 |
System and method for reliably storing data and providing efficient incremental backup and asynchronous mirroring by preferentially handling new data
According to the present invention, there is provided a method for reliably storing data in a computer system. The method includes receiving a piece of data to be stored at a storage system. In...
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7284104 |
Volume-based incremental backup and recovery of files
Various embodiments of systems and methods for performing volume-based incremental backups are disclosed. A method may involve generating a snappoint of a volume. The snappoint indicates which...
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7284105 |
Fast and economical establishment of remote copy
A storage apparatus is operable as primary in a remote copy pair and comprises a remote copy component operable to establish a remote copy relationship between said primary and a secondary; a copy...
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7284019 |
Apparatus, system, and method for differential backup using snapshot on-write data
An apparatus, system, and method are disclosed for differential data backup using snapshot on-write data. A snapshot module maintains an on-write data structure that captures a point-in-time or...
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7283260 |
Apparatus and method for restoring current parameters and/or values
Techniques for restoring parameters and/or values include determining a set of one or more parameters and/or values to be accessed by a user and that are stored in a first memory location,...
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7284103 |
Data copy method
A data copy method for a disk sub system that is equipped with a first storage apparatus including a first logic storage apparatus divided into a first region and a second region and a second...
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7281109 |
Method for managing volume groups considering storage tiers
A tiered storage system according to the present invention provides for the management of migration groups. When a migration group is defined, a reference tier position is determined and the...
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7281100 |
Data processing system and method
Embodiments of the present invention provide a data processing method for saving data stored within a portion of a memory associated with a first process executable by a data processing system; the...
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7281099 |
Computer system and a method of replication
In a cluster-structured disk subsystem, when creating a volume for an online backup separately from a volume for a normal I/O, it is desirable to be able to achieve such a creation for any volume...
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7280452 |
Optical recording/reproducing apparatus capable of reproducing backup recorded information in case of a power failure and recorded information backup method thereof
An optical recording/reproducing apparatus capable of backing up recorded information in case of an electrical power failure and a recorded information backup method thereof. Management information...
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7281108 |
Method and apparatus for managing migration of data in a computer system
Methods and apparatus for migrating a data set. In one embodiment, a migration is paused. In another embodiment, for a migration of data between multiple source/target groups, the migration is...
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7281098 |
Computer system for remote copy
Provided is a computer system capable of maintaining consistency of data stored in logical volumes. The computer system includes: a storage system including a disk controller which controls data...
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7278000 |
Data migration with worm guarantee
The storage system is coupled to a computer, and includes a controller and a disk drive including a plurality of logical volumes, at least in one of which updating prohibition information...
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7277997 |
Data consistency for mirroring updatable source data storage
An information handling system for mirroring data, in a fashion that is similar to asynchronous mirroring, but less complex in function. Source data storage for storing and updating data is...
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7275138 |
System and method for controlling the updating of storage device
The present invention makes it possible to preserve any and all update data relating to the updating of a storage device. The present invention is devised so that if a first storage device ( 3 S)...
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