Invention Grant
US08032733B2 Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and display
有权
使用具有访问频率和顺序访问比率计算和显示的存储控制器来重新分配逻辑到物理磁盘设备的装置和方法
- Patent Title: Apparatus and method for reallocating logical to physical disk devices using a storage controller with access frequency and sequential access ratio calculations and display
- Patent Title (中): 使用具有访问频率和顺序访问比率计算和显示的存储控制器来重新分配逻辑到物理磁盘设备的装置和方法
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Application No.: US12501694Application Date: 2009-07-13
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Publication No.: US08032733B2Publication Date: 2011-10-04
- Inventor: Yasutomo Yamamoto , Akira Yamamoto , Takao Satoh
- Applicant: Yasutomo Yamamoto , Akira Yamamoto , Takao Satoh
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Mattingly & Malur, PC
- Priority: JP8-085370 19960408
- Main IPC: G06F12/00
- IPC: G06F12/00
Abstract:
A storage controller calculates an access frequency of each logical disk; that is selects a first logical disk device of which the access frequency exceeds a first predetermined value, the first logical disk device being allocated to a first physical disk device; selects a second logical disk device which has the access frequency equal to or less than a second predetermined value, the second logical disk device being allocated to a second physical disk device; and reallocates the first and second logical device; and reallocates the first and second logical devices to the second and the first physical disk device, respectively.
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