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System and method for drive recovery following a drive failure

A driver and controller technology, applied in memory systems, non-redundancy-based fault handling, instruments, etc., can solve problems such as array loss and array performance degradation, and achieve the effect of avoiding subsequent failure and shortening the rebuilding time

Active Publication Date: 2008-09-10
DELL PROD LP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the simplified working mode, the performance of the array is degraded as resources are used to rebuild the drives
Also, if the drive being rebuilt has caching disabled during the rebuild period, the time required to rebuild the drive may be longer than rebuilding a drive with write caching enabled
Therefore, in many RAID levels, if the second drive fails while the array is in reduced mode, the array will be lost

Method used

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  • System and method for drive recovery following a drive failure
  • System and method for drive recovery following a drive failure
  • System and method for drive recovery following a drive failure

Examples

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Embodiment Construction

[0012] For purposes of illustration, an information handling system may include a tool, or collection of tools, that computes, sorts, processes, transmits, receives, retrieves, initiates, switches, stores, displays, certifies, detects, records, Reproduce, manipulate or exploit any form of information, intelligence or data for commercial, scientific, control or other purposes. For example, an information handling system may be a personal computer, a network storage device, or any other suitable device, and may vary in size, shape, performance, functionality, and price. An information handling system may include random access memory (RAM), one or more processing resources such as a central processing unit (CPU) or hardware or software control logic, ROM, and / or other types of nonvolatile memory. Additional components of the information handling system may include one or more disk drives, one or more network ports for communicating with external devices, and various input / output ...

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PUM

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Abstract

A system and method for rebuilding a drive is disclosed in which the write cache of the drive is enabled and a separate record is kept of the commands transmitted to the drive. On a periodic basis, the drive flushes the data in its cache, and the history of commands is cleared. When the drive is successfully rebuilt, the cache of the drive is disabled.

Description

technical field [0001] The present invention relates generally to the field of data storage systems and, more particularly, to systems and methods for rebuilding drives with write caching enabled. Background technique [0002] As the use and value of information continues to increase, individuals and businesses are finding other ways to process and store information. One option available to the user is an information handling system. An information handling system typically processes, compiles, stores and / or communicates information or data for business, personal or other purposes, thereby allowing users to exploit the value of the information. Because technology and information processing needs and requirements vary between different users or applications, information processing systems can also process, store or transmit information according to what information is processed, how to process information, and how quickly and efficiently. Or send information to change. Cha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F12/00G06F12/16G11B20/10G06F3/06G06F11/00G06F11/07G06F12/08G06F13/16G11B20/18
CPCG06F11/0727G06F11/1084G06F12/0866G06F11/0793B65D83/0841B65H35/0086B65H35/002B65H2301/51512B65H2301/51532B65H2301/5154B65H2701/1944
Inventor K·T·马克斯A·A·J·阿里R·克劳森
Owner DELL PROD LP
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