The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2003
Filed:
Mar. 28, 2001
Sung-Hoon Baek, Taejon, KR;
Dae-Young Ahn, Daejeon, KR;
Abstract
In a data storage system based on large capacitance, high performance and high availability through a hierarchical construction of redundant arrays of expensive disks (RAID) and a method for controlling the storage system, in order to provide better reliability and more prominent performance than the traditional RAID, and more particularly, in a hierarchical RAID system provided with a plurality of RAIDs in which at least one RAID composed of a large number of disks is used as a virtual disk, and a method for controlling the RAID system, and further in a record medium capable of being read through a computer having a writing of a program to realize the inventive method; the hierarchical RAID system includes a host computing unit; at least one upper level RAID controlling unit having a first RAID Level X, for controlling a plurality of first lower level RAID controlling units having a second RAID Level Y in order to use a lower level RAID as a virtual disk; and the plurality of first lower level RAID controlling units having the second RAID Level Y, for controlling numerous member disks under a control of the upper level RAID controlling unit so as to be used as the virtual disk of the upper level RAID.
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