Patent application number | Description | Published |
20090276569 | APPARATUS AND METHOD FOR REALLOCATING LOGICAL TO PHYSICAL DISK DEVICES USING A STORAGE CONTROLLER WITH ACCESS FREQUENCY AND SEQUENTIAL ACCESS RATIO CALCULATIONS AND DISPLAY - A storage controller calculates an access frequency of each logical disk; that is selects a first logical disk device of which the access frequency exceeds a first predetermined value, the first logical disk device being allocated to a first physical disk device; selects a second logical disk device which has the access frequency equal to or less than a second predetermined value, the second logical disk device being allocated to a second physical disk device; and reallocates the first and second logical device; and reallocates the first and second logical devices to the second and the first physical disk device, respectively. | 11-05-2009 |
20100005240 | DISPLAY APPARATUS AND ITS METHOD FOR DISPLAYING CONNECTIONS AMONG A HOST, A LOGICAL UNIT AND A STORAGE SYSTEM IN A VIRTUAL STORAGE SYSTEM - This invention provides a user or an operator with a management apparatus or method for displaying logical connection information between an interface connected to a computer and a switch and a storage system or a logical unit in the storage system in a virtual storage system, wherein the switch receives a first access request from said computer, converts said first access request to a second access request to one of said plural storage systems, and sends said second access request to one of said plural storage systems or one logical unit | 01-07-2010 |
20110167218 | STORAGE SYSTEM FOR SENDING AN ACCESS REQUEST FROM A HOST TO A STORAGE SUBSYSTEM - This invention provides a user or an operator with a management apparatus or method for displaying logical connection information between an interface connected to a computer and a switch and a storage system or a logical unit in the storage system in a virtual storage system, wherein the switch receives a first access request from said computer, converts said first access request to a second access request to one of said plural storage systems, and sends said second access request to one of said plural storage systems or one logical unit. | 07-07-2011 |
20120005447 | APPARATUS FOR REALLOCATING LOGICAL TO PHYSICAL DISK DEVICES USING A STORAGE CONTROLLER AND METHOD OF THE SAME - A storage controller calculates an access frequency of each logical disk; that is selects a first logical disk device of which the access frequency exceeds a first predetermined value, the first logical disk device being allocated to a first physical disk device; selects a second logical disk device which has the access frequency equal to or less than a second predetermined value, the second logical disk device being allocated to a second physical disk device; and reallocates the first and second logical device; and reallocates the first and second logical devices to the second and the first physical disk device, respectively. | 01-05-2012 |
20120011321 | METHOD AND SYSTEM OF COLLECTION PERFORMANCE DATA FOR STORAGE NETWORK - This invention provides a user or an operator with a management apparatus or method for displaying logical connection information between an interface connected to a computer and a switch and a storage system or a logical unit in the storage system in a virtual storage system, wherein the switch receives a first access request from said computer, converts said first access request to a second access request to one of said plural storage systems, and sends said second access request to one of said plural storage systems or one logical unit. | 01-12-2012 |
20120203965 | METHOD AND SYSTEM OF COLLECTION PERFORMANCE DATA FOR STORAGE NETWORK - This invention provides a user or an operator with a management apparatus or method for displaying logical connection information between an interface connected to a computer and a switch and a storage system or a logical unit in the storage system in a virtual storage system, wherein the switch receives a first access request from said computer, converts said first access request to a second access request to one of said plural storage systems, and sends said second access request to one of said plural storage systems or one logical unit. | 08-09-2012 |
20130132673 | STORAGE SYSTEM, STORAGE APPARATUS AND METHOD OF CONTROLLING STORAGE SYSTEM - A storage system enables a core storage apparatus to execute processing requiring securing of data consistency, while providing high write performance to a host computer. | 05-23-2013 |
20140114936 | METHOD FOR GENERATING DATA IN STORAGE SYSTEM HAVING COMPRESSION FUNCTION - The present invention aims at improving the performance of a compression function in a storage system, and solves the prior art problem of having to decompress a whole compression unit even if a read request or a write request targets only a portion smaller than the compression unit, causing increase of overhead of decompression processing and elongation of processing time, and deteriorating performance The present invention prevents unnecessary decompression processing and reduces the overhead of processing by suppressing the range of decompression processing to a minimum portion according to the relationship between the read/write request range and the compression unit. | 04-24-2014 |
20140115019 | DISTRIBUTION PROCESSING UNIT OF SHARED STORAGE - When processing data via multiple computers, the number of computers can be increased or decreased without actually moving the data assigned to the respective computers, and the data can be arranged and processed so as to enhance the performance of the system in response to the increase of the number of computers. A plurality of computers for performing data processing stores target data to be processed in a shared storage system, and when data processing is to performed, the shared storage divides the storage area storing data corresponding to the number of computers, and creates virtual data storage areas referring to a portion of the storage area for each computer, so as to enable each computer to refer to independent virtual data storage areas and to complete data processing. | 04-24-2014 |