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    • 8. 发明授权
    • Storage system and method for reallocating data
    • 用于重新分配数据的存储系统和方法
    • US08732421B2
    • 2014-05-20
    • US13256393
    • 2011-08-26
    • Katsuya SatoShintaro InoueYutaka Takata
    • Katsuya SatoShintaro InoueYutaka Takata
    • G06F12/00G06F13/00G06F13/28
    • G06F3/0649G06F3/0605G06F3/061G06F3/0685
    • The present invention comprises a virtual volume 50, which is a virtual storage area comprising multiple virtual page groups, a pool 60, which is a storage area comprising multiple pool page groups having different access performance, and a controller 13, which comprises a corresponding relationship between the virtual page and the pool page, and accesses the pool page corresponding to the virtual page based on accesses to the virtual page from other apparatuses, and the controller 13, based on an access load trend with respect to each virtual page in each time slot, executes processing for deciding an ideal pool page allocation destination for each virtual page in each time slot, and reallocating a virtual page to the ideal pool page at a time, which is prior to a start time, so that the ideal pool page can be allocated to each virtual page by the start time of each time slot.
    • 本发明包括虚拟卷50,虚拟卷50是包括多个虚拟页面组的虚拟存储区域,作为包括具有不同访问性能的多个池页面组的存储区域的池60以及包括对应关系的控制器13 在虚拟页面和池页面之间,并且基于对来自其他设备的虚拟页面的访问来访问对应于虚拟页面的池页面,并且控制器13基于每次虚拟页面的访问负载趋势 执行用于为每个时隙中的每个虚拟页面确定理想池页面分配目的地的处理,并且在开始时间之前一次将虚拟页面重新分配到理想池页面,使得理想池页面可以 按每个时隙的开始时间分配给每个虚拟页面。