Storage system condition indicator and method

A storage device and storage system technology, which can be applied to the generation of response errors, error detection of redundant codes, input/output to record carriers, etc., and can solve problems such as complex hot backup maintenance.
CN101095116AInactive Publication Date: 2007-12-26德洛博公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
德洛博公司
Publication Date
2007-12-26
Estimated Expiration
Not applicable · inactive patent

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Abstract

A fault-tolerance storage system allowing storage devices of various sizes to be dynamically expandable and contractile. If possible, data may be stored redundantly across one or more storage devices. With the addition or deletion of the storage devices, a data arrangement across one or more storage devices is automatically configured to provide redundance with appropriate level for data as much as possible. It is possible to reduce the consumption of the storage devices by compression technology based on hashing function. Also disclosed is a technology for releasing unused storage blocks.
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Description

technical field

[0001] This invention relates to digital data storage systems and methods, and more particularly to those systems and methods that provide fault-tolerant storage. Background technique

[0002] The prior art is known to provide redundant disk storage in a mode according to any one of various RAID (Redundant Array of Independent Disks) protocols. A typical disk array using RAID mode is a complex structure that needs to be managed by experienced information technology personnel. Also in many array designs using RAID mode, if the disk drives in the array are of non-uniform capacity, the design may not be able to use any capacity on the drives beyond the capacity of the smallest drive in the array.

[0003] One problem with using standard RAID systems is that disk corruption can occur in less frequently used areas of the disk array. In the case of another drive failure, it is not always certain that damage has occurred. In this case, corrupted data may be propa...

Claims

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