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Storage cluster system, data processing method, and program

A technology for storing clusters and data, applied in the input/output process of data processing, electrical digital data processing, transmission systems, etc., can solve the problem of increasing the storage area for retrieval time, and achieve the effect of suppressing table search time

Inactive Publication Date: 2007-10-31
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Routing information for other devices grows in proportion to the number of devices included in the storage cluster, which leads to a problem that configuration changes at the time of extent migration may affect the entire storage cluster, increasing table retrieval time and The storage area used to hold the table

Method used

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  • Storage cluster system, data processing method, and program
  • Storage cluster system, data processing method, and program
  • Storage cluster system, data processing method, and program

Examples

Experimental program
Comparison scheme
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no. 1 approach

[0053] FIG. 1 is a block diagram showing a configuration example of a storage cluster system to which a data processing method according to a first embodiment of the present invention is applied.

[0054] Specifically, the storage cluster system 10 according to the embodiment of the present invention includes a plurality of storage devices 12 (#A, #B, and #C) and a host device 18, wherein the storage devices 12 are configured via a storage area composed of Fiber Channel, iSCSI, etc. The host device 18 is connected to the storage area network 11 similarly. The plurality of storage devices 12 (#A, #B, and #C) are also collectively referred to as a storage cluster.

[0055] Each storage device 12 includes a controller 14 and a physical storage medium 16 constituted by memory hardware, HDD, or the like. Only three memory devices 12 are representatively shown in the figures, but the number is not limited to three.

[0056] The physical storage medium 16 is divided into, for examp...

no. 2 approach

[0074] The present invention will be described below based on a second embodiment.

[0075] The storage cluster system applying the data processing method according to the second embodiment of the present invention is a modified example of the storage cluster system applying the data processing method according to the first embodiment of the present invention, and the operation of the controller 14 is an interaction between them. The only difference. Therefore, in this embodiment, only the operation of the controller 14 will be described below, and repeated explanations will be omitted.

[0076] A controller 14 is provided to access the physical extents. The controller 14 maintains a prioritized routing table that defines the priority order of access from the storage device 12 comprising the controller 14 to other storage devices 12 .

[0077] Each storage device 12 is connected to these controllers 14 via a storage area network 11 . As a result, each storage device 12 acce...

no. 3 approach

[0099] The present invention will be described below with reference to a third embodiment.

[0100] The storage cluster system applying the data processing method according to the third embodiment of the present invention is a modified example of the storage cluster system applying the data processing method according to the first or second embodiment, and only the operation of the controller 14 is different between them . Therefore, only the operation of the controller 14 will be described below, and repeated explanations will be omitted.

[0101] Specifically, in the storage cluster system according to the present embodiment, the control in sending a processing request to any other storage device 12 other than the upstream storage device 12 according to the access priority order defined in the prioritized routing table In the case of the controller 14, and if the controller 14 does not accept the processing request (impossible to transmit) in the storage device 12 of the de...

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Abstract

Disclosed is a storage cluster system which includes a storage cluster constituted of a plurality of storage devices and a host device connected to the storage cluster by a first communication network, and each storage device includes a plurality of accessible regions into which a region logically accessible by the host device is divided, a controller to access to physically accessible regions of the plurality of accessible regions which are physically managed by the storage device, and priority order information which is referred to by the controller and which defines an access priority order of the storage device including the controller to the other storage devices.

Description

technical field [0001] The present invention relates to a storage cluster system in which a plurality of storage devices are connected to each other through a network so that a host device can access the same logical volume via a plurality of storage devices, a data processing method in a storage cluster system, and realizing the data Procedure for processing methods. Background technique [0002] Generally, in a storage cluster system including a storage cluster composed of a plurality of storage devices and a host device connected to the storage cluster via a communication network, a logical volume in such a storage device to be accessed by the host device and composed of the There is a fixed correspondence relationship between physical storage media such as at least one HDD of a logical volume. Therefore, the corresponding relationship cannot be changed depending on the situation of the location where the data is saved, so, for example, there arises a case where access m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/28H04L29/08H04L29/06
CPCG06F3/0659G06F3/0608G06F3/061G06F3/0644G06F3/067
Inventor 友永和聪
Owner KK TOSHIBA
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