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Method and apparatus for performing data recovery in redundant storage system

A technology for redundant storage and recovery operations, which is applied in memory systems, hardware redundancy for error detection of data, redundancy in computing for data error detection, etc., to achieve the effect of enhancing overall performance

Inactive Publication Date: 2017-11-28
SYNOLOGY INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] One of the purposes of the present invention is to provide a method and related architecture to perform data recovery operations in redundant storage systems, so as to solve the problems faced by the prior art

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  • Method and apparatus for performing data recovery in redundant storage system
  • Method and apparatus for performing data recovery in redundant storage system

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Embodiment Construction

[0037] The embodiment of the present invention discloses a data recovery architecture applied to a redundant storage system, wherein the redundant storage system may be a multi-layered storage system stack with redundant storage capabilities, which consists of multiple A storage system with redundant storage capacity. For example, the storage system may include at least one Redundant Array of Independent Disk (RAID) or at least one Distributed Replicated Block Device (DRBD), and the above data recovery architecture may be The storage system is implemented. In another example, the multiple storage systems may include at least one redundant array of independent disks or at least one distributed replication group device, and the data recovery architecture may be implemented by any one of the multiple storage systems. Implementation. Based on the data recovery architecture of the embodiment of the present invention, the redundant storage system can automatically restore or modify...

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Abstract

A method for performing data recovery in a redundant storage system and an associated apparatus are provided. The method includes: determining a state of a cache block of a plurality of cache blocks, in which the plurality of storage devices includes a set of Hard Disk Drives (HDDs) and a set of Solid State Drives (SSDs), an SSD Redundant Array of Independent Disk (RAID) of the redundant storage system includes the set of SSDs, and an HDD RAID of the redundant storage system includes the set of HDDs, in which the SSD RAID is utilized as a cache system of the HDD RAID and includes the plurality of cache blocks; and performing a retry-read operation on at least one of the HDD RAID and the SSD RAID according to the state of the cache block, to obtain a correct version of data within the redundant storage system. The overall efficiency is effectively enhanced by the method and related structure without wasting the operation resource.

Description

Technical field [0001] The present invention is related to a performance management solution for a data storage system, and in particular to a method and device for performing data recovery operations in a redundant storage system. Background technique [0002] The present invention requires U.S. non-provisional application number 15 / 491,994 (application date April 20, 2017), U.S. provisional application number 62 / 441,561 (application date January 3, 2017), and Taiwan area application number 105114847 (May 2016 1st) priority. All the contents of these applications are incorporated by reference. [0003] Redundant storage systems with redundant storage capabilities, such as Redundant Array of Independent Disks (RAID) can combine multiple storage devices into a storage pool and send redundant data to different storage devices , Wherein when a single device fails, the redundant data can be used for data recovery. However, when encountering bit rot or silent data corruption, the exi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F11/16
CPCG06F11/1469G06F11/1612G06F11/1662G06F11/1076G06F16/11G06F3/0619G06F3/0659G06F3/0685G06F11/2094G06F12/0802G06F2201/85G06F2212/60
Inventor 连怀恩郑仲强叶建宽梁志成张慈麟简寗晏陈炫廷
Owner SYNOLOGY INC