7 results about "RAID" patented technology

In one aspect, a method of a storage adapter controlling a redundant array of independent disks (RAID) may be provided. The method may include examining performance curves of a storage adapter with a write cache, determining if an amount of data entering the write cache of the storage adapter has exceeded a threshold, and implementing a strategy based on the determining operation. The strategy may include one of coupling Read-XOR/Write operations and providing priority reordering of Read operations over the Read-XOR/Write operations in order to minimize host read response time if data entering the write cache is less than the threshold, and allowing all Read operations and Read-XOR/Write operations to be queued at the device using simple tags in order to achieve maximum throughput if data entering the write cache is greater than the threshold. Additional aspects are described.

A method and system to reorganize a storage structure by generating correlation data that represents relationships between storage blocks of a storage structure, generating a block allocation scheme for the storage structure, determining a block reorganization operation, performing the block reorganization operation, and updating a virtual map. In certain embodiments, the system may include multiple host computers, a data storage subsystem, and multiple storage structures. The storage structures may include a hard disk, an array of hard disks, an IBM TotalStorage™ system, and a hierarchical storage system with RAID.

The invention discloses a storage system for a network communication recording device of a digital substation. The storage system comprises a main controller board module, a hard disk pack module and an IPMI (Intelligent Platform Management Interface) module, wherein the main controller board module is provided with an embedded processor, dual memories and an operation accelerator chip; software system modules are arranged in the dual memories; an operation system module of each software system module is used for running an guiding and loading program for the embedded processor, driving an embedded Linux operation system and introducing a Rootfs file system; a monitoring module is used for monitoring system operation, network link, chip temperature and voltage data of a module and providing the data to the outside through an IPMI specification; a storage control module is used for establishing, removing, restoring, reestablishing and monitoring a disk array of the hard disk pack module, carrying out operation management through a WEB management interface module and realizing NAS (Network Attached Storage) management and IPSAN (Internet Protocol Storage Area Network) management through a data access management module; a data tamper preventing module is used for preventing data from being illegally tampered; and the hard disk pack module is an RAID (Redundant Array of Independent Disk) 0/1/5/6 type disk array; and the IPMI module is used for monitoring the operation condition of the storage system and exporting monitoring data according to the IPMI specification.

The invention provides a PCIE storage device supporting a self-Raid function based on a U.2 interface. Through integrated design of a storage unit, a Switch chip is used to interconnect independent storage units, and the independent storage units are interconnected with the external. The device can solve problems of occupying excessive drives under a Raid environment and cost rising caused by single U.2 interface device. The device makes a production maintenance link simplified, improves application of a server, and effectively controls cost.

The invention provides a method for dynamically adjusting the reading order number and the writing order number in a storage device Cache. The method comprises the steps that the random writing order number R_num and the total writing order number T_num which are issued by the writing Cache are counted within a periodic time T; the reading order number Raid_r and the writing order number Raid_w which are received by an RAID are counted within the periodic time T; the writing order number Wn and the reading order number Rn which are sent to an RAID layer by a Cache layer are dynamically adjusted according to the random writing pressure obtained by the R_num and the T_num, the actual reading and writing pressure, obtained by the Raid_r and the Raid_w, of the RAID layer and the upper limit value Up_n of the total order number issued by the Cache. The function that various order numbers can be obtained respectively through layers of an existing system is utilized, an arithmetic is designed and adjusted according to an actual situation which can be reflected through a relation of the order numbers, so that according to a service reading and writing situation, the issuing values of the reading order number and the writing order number of the Cache layer are finely and dynamically adjusted, and the system performance is better improved.

Techniques for determining an effective capacity of a driver segment pool generated from at least one storage driver group are disclosed. A memory driver sub-group having a relatively higher physicalcapacity is selected from the group. The number of the storage drivers in the sub-group is equal to the total number of driver sections indicated by each entry in the RAID mapping table. Each storagedriver in the sub-group is assigned an individual effective capacity equal to an individual physical capacity of the storage driver in the sub-group having a minimum individual physical capacity. Eachstorage driver in the group is assigned an individual effective capacity equal to its own physical capacity, which is not included in the sub-group. The effective capacity of the driver section poolis set to a sum of all individual effective capacities assigned to the storage drivers in the storage driver group.