| Patent application number | Description | Published |
|---|
| 20080201392 | Storage system having plural flash memory drives and method for controlling data storage - Provided is a storage system having a storage device including memory drives formed of the non-volatile memory, a group is constituted by the memory drives whose number is larger than the number of memory drives necessary to provide the memory capacity, the divided storage areas are managed in each of segments that includes at least one of the divided storage areas, the data storage area or the temporary storage area is allocated to the divided storage areas, upon receiving a data write request, the data storage area in which the write data is written and the segment are specified, the updated data is written in the temporary storage area included in the specified segment, the temporary storage area in which the data is written is set as a new data storage area, and data stored in the data storage area is erased and set as a new temporary storage area. | 08-21-2008 |
| 20080250219 | STORAGE SYSTEM IN WHICH RESOURCES ARE DYNAMICALLY ALLOCATED TO LOGICAL PARTITION, AND LOGICAL DIVISION METHOD FOR STORAGE SYSTEM - An object of the invention is to dynamically change the allocation of resources in a storage system. The resources including host IF units | 10-09-2008 |
| 20080270701 | Cluster-type storage system and managing method of the cluster-type storage system - A storage system | 10-30-2008 |
| 20080276038 | Storage system using flash memory modules logically grouped for wear-leveling and raid - A storage system using flash memories includes a storage controller and plural flash memory modules as storage media. Each flash memory module includes at least one flash memory chip and a memory controller for leveling erase counts of blocks belonging to the flash memory chip. The storage controller combines the plural flash memory modules into a first logical group, translates a first address used for accessing the flash memory modules belonging to the first logical group to a second address used for handling the first address in the storage controller, and combines the plural first logical groups into a second logical group. | 11-06-2008 |
| 20090006890 | Storage system and control method of storage system - Provided is a storage system superior in fault tolerance. This storage system is composed of a controller having a plurality of processors and other units. When an error occurs in any one of the components in the controller, the storage system cuts off an I/O path of the controller, specifies the failed component in the cutoff status, and invalidates such failed component. Further, after invalidating the failed component, the storage system determines whether it is operable only with the normal components, cancels (releases) the cutoff of the I/O path when it determines that it is operable, and resumes operation by rebooting itself. | 01-01-2009 |
| 20090077272 | DISK CONTROLLER - A disk controller has a channel adapter having a connection interface to a host computer or a disk drive; a memory adapter for temporarily storing data to be transferred between the host computer and disk drive; a processor adapter for controlling operations of the channel adapter and memory adapter; and a switch adapter for configuring an inner network by interconnecting the channel adapter, memory adapter and processor adapter, wherein the channel adapter, memory adapter, processor adapter and switch adapter each include a DMA controller for performing a communication protocol control of the inner network; and packet multiplex communication is performed among the DMA controllers provided in the adapters. The disk controller can realize a high transfer efficiency and a low cost while retaining a high reliability. | 03-19-2009 |
| 20090083610 | Storage sub-system and method for controlling the same - The present invention provides means for effectively reducing the amount of data by means of de-duplication in a disk array apparatus having a data guarantee code. | 03-26-2009 |
| 20090113142 | STORAGE HAVING LOGICAL PARTITIONING CAPABILITY AND SYSTEMS WHICH INCLUDE THE STORAGE - A storage includes: host interface units; file control processors which receives a file input/output request and translates the file input/output request into a data input/output request; file control memories which store translation control data; groups of disk drives; disk control processors; disk interface units which connect the groups of disk drives and the disk control processors; cache memories; and inter-processor communication units. The storage logically partitions these devices to cause the partitioned devices to operate as two or more virtual NASs. | 04-30-2009 |
| 20090216945 | STORAGE SYSTEM WHICH UTILIZES TWO KINDS OF MEMORY DEVICES AS ITS CACHE MEMORY AND METHOD OF CONTROLLING THE STORAGE SYSTEM - Provide is a storage system including one or more disk drives, and one or more cache memories for temporarily storing data read from the disk drives or data to be written to the disk drives, in which: the cache memories includes volatile first memories and non-volatile second memories; and the storage system receives a data write request, stores the requested data in the volatile first memories, selects one of memory areas of the volatile first memories if a total capacity of free memory areas contained in the volatile first memories is less than a predetermined threshold, write data stored in the selected memory area in the non-volatile second memories, and changes the selected memory area to a free memory area. Accordingly, there can be realized capacity enlarging of the cache memory using a non-volatile memory device while realizing a high speed similar to that of a volatile memory device. | 08-27-2009 |
| 20090274027 | STORAGE DEVICE AND ITS DRIVE STARTUP METHOD - The time required for starting up drives in a storage device mounted with both hard disk drives and solid state drives is shortened. A storage controller of the storage device identifies the type (HDD/SSD) of the mounted drives before starting up the drives. The storage controller thereafter performs staggered spinup to the HDDs in several batches. After the startup of HDDs is complete, the storage controller collectively starts up the SSDs. The storage controller determines the drive startup processing based on a pre-set drive startup policy such as reduction of the peak current reduction or shortening of the startup time, and the drive type identification result. | 11-05-2009 |
| 20100115329 | Storage Device, and Data path Failover Method of Internal Network of Storage Controller - A storage device in which the MR-IOV is applied to an internal network of a storage controller. Data path failover can be executed in the storage device. The internal network of the storage controller is configured to enable the access of a virtual function (VF) “VF 0:0, 1” of each endpoint device (ED | 05-06-2010 |
| 20100131704 | Storage control apparatus - In a storage control apparatus provided therein with a battery-backed-up memory device being a combination of a cache memory of a storage device and a system memory on the side of a CPU, an ASIC (Application-Specific Integrated Circuit) having a virtual window function is provided to a system, and I/O from a front end and/or a back end is performed via a virtual window, thereby making an addition of data integrity code, and performing automatic dual write of data. With such a storage control apparatus provided therein with a battery-backed-up memory being a combination of a CS/DS (Code Storage/Data Storage) and a cache, implemented are protection of block data, and dual write into a Cache (user data, control data) so that the reliability can be kept at the time of data input/output control. | 05-27-2010 |
| 20100153961 | STORAGE SYSTEM HAVING PROCESSOR AND INTERFACE ADAPTERS THAT CAN BE INCREASED OR DECREASED BASED ON REQUIRED PERFORMANCE - A storage system is comprised of an interface unit | 06-17-2010 |
| 20100205359 | Storage System Using Flash Memory Modules Logically Grouped for Wear-Leveling and Raid - A storage system using flash memories includes a storage controller and plural flash memory modules as storage media. Each flash memory module includes at least one flash memory chip and a memory controller for leveling erase counts of blocks belonging to the flash memory chip. The storage controller combines the plural flash memory modules into a first logical group, translates a first address used for accessing the flash memory modules belonging to the first logical group to a second address used for handling the first address in the storage controller, and combines the plural first logical groups into a second logical group. | 08-12-2010 |
| 20110004785 | STORAGE SYSTEM AND CONTROL METHOD OF STORAGE SYSTEM - A fault-tolerant storage system is provided. The storage system is composed of a controller having a plurality of processors and other units. When an error occurs in any one of the components in the controller, the storage system cuts off an I/O path of the controller, specifies the failed component in the cutoff status, and invalidates the failed component. After invalidating the failed component, the storage system determines whether it is operable only with the normal components, cancels (releases) the cutoff of the I/O path when it determines that it is operable, and resumes operation by rebooting. | 01-06-2011 |
