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7430648 Remote storage disk control device with function to transfer commands to remote storage devices  
A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage...
7412543 Method for controlling storage system, and storage control apparatus  
A method for controlling a storage system including a host computer, and a first and a second storage control apparatuses each receiving a data input/output request from the host computer and...
7380032 Storage system, and method for controlling the same  
Disclosed is a method A method for controlling a storage system including a host computer; a first storage controller connected communicably to the host computer, for receiving a data frame...
7373670 Method and apparatus for setting access restriction information  
Access restriction information that an old storage device has is transferred to a new storage device. A management server 2200 obtains a port management TL 2445 that the old storage device ...
7366853 Virtualization controller and data transfer control method  
Embodiments of the present invention are directed to systems and methods of controlling data transfer between a host system and a plurality of storage devices. One embodiment is directed to a...
7363461 Remote storage disk control device and method for controlling the same  
A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume....
7363446 Storage system and storage control device  
A first storage control device is provided with a virtual LU for showing a logical volume possessed by a second storage control device as if it were its own volume. When data processing requested...
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...
7263593 Virtualization controller and data transfer control method  
Embodiments of the present invention are directed to systems and methods of controlling data transfer between a host system and a plurality of storage devices. One embodiment is directed to a...
7249234 Storage system and storage control device  
A first storage control device is provided with a virtual LU for showing a logical volume possessed by a second storage control device as if it were its own volume. When data processing requested...
7240238 Remote data mirroring  
Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a...
7231466 Data migration method for disk apparatus  
Data migration can be executed between new and old disk apparatuses without changing the disk definition of a host computer. A switch having the function of online data migration is provided...
7231465 Storage system, and method for controlling the same  
Disclosed is a method A method for controlling a storage system including a host computer; a first storage controller connected communicably to the host computer, for receiving a data frame...
7219201 Remote storage disk control device and method for controlling the same  
A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume....
7209986 Method for controlling storage system, and storage control apparatus  
A method for controlling a storage system including a host computer, and a first and a second storage control apparatuses each receiving a data input/output request from the host computer and...
7203806 Remote storage disk control device with function to transfer commands to remote storage devices  
A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage...
7200727 Remote storage disk control device with function to transfer commands to remote storage devices  
A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage...
7184378 Storage system and controlling method thereof, and device and recording medium in storage system  
A first storage device control device stores, when a first data write/read request is received, correspondences between first logical units and second logical units referenced when determining...
7177991 Installation method of new storage system into a computer system  
A new storage unit is installed such that installation costs are suppressed and functions of the new storage unit can be utilized sufficiently. An access right is changed such that the new storage...
7165163 Remote storage disk control device and method for controlling the same  
A storage device system includes an information processing device, a first storage device equipped with a first storage volume, and a second storage device equipped with a second storage volume....
7155587 Storage subsystem and performance tuning method  
In a storage subsystem, performance tuning is performed with respect to all of the logical devices including external storage subsystems that are not directly connected to host computers. The...
7139888 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...
7130941 Changing-over and connecting a first path, wherein hostscontinue accessing an old disk using a second path, and the second path of the old disk to a newly connected disk via a switch  
Data migration can be executed between new and old disk apparatuses without changing the disk definition of a host computer. A switch having the function of online data migration is provided...
7080202 Remote storage disk control device with function to transfer commands to remote storage devices  
A storage device system includes an information processing device and at least first and second storage devices. The first and second storage devices are equipped with first and second storage...
7073090 Remote data mirroring system having a remote link adapter  
A primary data storage system is linked to a geographically remote secondary data storage system for automatically maintaining a remote copy of the data in the primary storage. The primary data...
7055059 Remote data mirroring  
Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a...
7051121 Method for controlling storage system, and storage control apparatus  
A method for controlling a storage system including a host computer, and a first and a second storage control apparatuses each receiving a data input/output request from the host computer and...
6728823 Cache connection with bypassing feature  
A source cache transfers data to an intermediate cache along a data connection. The intermediate cache is provided between the source cache and a target, and includes a memory array. The source...
6647474 Remote data mirroring system using local and remote write pending indicators  
A primary data storage system is linked to a geographically remote secondary data storage system for automatically maintaining a remote copy of the data in the primary storage. The primary data...
6625705 Remote data mirroring system having a service processor  
A primary data storage system is linked to a geographically remote secondary data storage system for automatically maintaining a remote copy of the data in the primary storage. Each of the data...
6601147 Computer system and method for maintaining an integrated shared buffer memory in a group of interconnected hosts  
A computer system with a shared-buffer memory includes a plurality of interconnected host systems. Each of the host systems includes system random access memory, with a portion of the system random...
6598134 System and method for on-line, real time, data migration  
A system and method for providing on-line, real-time, transparent data migration from an existing storage device to a replacement storage device. The existing and replacement storage devices are...
6502205 Asynchronous remote data mirroring system  
Two data storage systems are interconnected by a data link for remote mirroring of data. Each volume of data is configured as local, primary in a remotely mirrored volume pair, or secondary in a...
EP0789877B1 SYSTEM AND METHOD FOR ON-LINE, REAL-TIME, DATA MIGRATION  
Abstract not available for EP0789877 Abstract of corresponding document: US5680640 A system and method for providing on-line, real-time, transparent data migration from a first data storage system...
6356977 System and method for on-line, real time, data migration  
A system and method for providing on-line, real-time, transparent data migration from an existing storage device to a replacement storage device. The existing and replacement storage devices are...
6108748 System and method for on-line, real time, data migration  
A system and method for providing on-line, real-time, transparent data migration from an existing storage device to a replacement storage device. The existing and replacement storage devices are...
5953510 Bidirectional data bus reservation priority controls having token logic  
A data bus reservation system controls data transfer between storage control elements (SCEs) in a multi-processor system. Each SCE is assigned a default bidirectional (BIDI) data bus for transfer...
5870625 Non-blocking memory write/read mechanism by combining two pending commands write and read in buffer and executing the combined command in advance of other pending command  
A computer system is disclosed which has a plurality of masters, such as a processor, a cache memory or an I/O device controller. Read response time from the main memory is minimized by a...
5835953 Backup system that takes a snapshot of the locations in a mass storage device that has been identified for updating prior to updating  
A system and method for maintaining logically consistent backups using minimal data transfer are presented. A system comprises a backup system having a backup storage device and one or more primary...
5835714 Method and apparatus for reservation of data buses between multiple storage control elements  
A data bus reservation system controls data transfer between storage control elements (SCEs) in a multi-processor system. Each SCE is assigned a default bidirectional (BIDI) data bus for transfer...
5727164 Apparatus for and method of managing the availability of items  
Apparatus and method for managing the availability of items using a computer system. The system permits various computers to access databases located at offsite computers to retrieve/transmit...
5706435 System for maintaining data coherency in cache memory by periodically broadcasting a single invalidation report from server to clients  
A method and system are provided for maintaining coherency between a server processor and a client processor that has a cache memory. The server may, for example, be a fixed location mobile unit...
5701516 High-performance non-volatile RAM protected write cache accelerator system employing DMA and data transferring scheme  
A data storage system is coupled to a host computer system for the transfer of data between the host and a plurality of data storage devices. The data storage devices are coupled to a plurality of...
5689679 Memory system and method for selective multi-level caching using a cache level code  
A selective multilevel caching method and system including a main memory and a plurality of cache memories are disclosed. The main memory and cache memories are arranged in a multilevel hierarchy:...
5680640 System for migrating data by selecting a first or second transfer means based on the status of a data element map initialized to a predetermined state  
A system and method for providing on-line, real-time, transparent data migration from a first data storage system to a second data storage system. The first data storage system which had previously...
5664151 System and method of implementing read resources to maintain cache coherency in a multiprocessor environment permitting split transactions  
A multiprocessing system that uses read resources to track cache coherent split transactions on its main system bus. Pending reads are tracked by being associated with read resources. When a read...
5649157 Memory controller with priority queues  
A memory controller receives reads, memory writes, and cache writes. A pending read is selected and issued to memory. When a response is received from memory, all cache writes are checked to...
5649152 Method and system for providing a static snapshot of data stored on a mass storage system  
A system and method for providing a static snapshot, or image, of data stored on a mass storage system are disclosed. First, a preservation memory is cleared and a virtual device is created....
5581704 System for maintaining data coherency in cache memory by periodically broadcasting invalidation reports from server to client  
A method and system are provided for maintaining coherency between a server processor and a client processor that has a cache memory. The server may, for example, be a fixed location mobile unit...
5561818 Microprocessor and data processing system for data transfer using a register file  
A microprocessor having a register file inside is so combined with an external memory through a dedicated high-speed bus that the memory operates as a bank for said register file. This...
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