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    • 1. 发明申请
    • STORAGE SYSTEM AND STORAGE AREA ALLOCATION METHOD
    • 存储系统和存储区域分配方法
    • WO2012131749A1
    • 2012-10-04
    • PCT/JP2011/001775
    • 2011-03-25
    • HITACHI, LTD.AKUTSU, HiroakiOHIRA, YoshinoriEGUCHI, YoshiakiYAMAMOTO, Masayuki
    • AKUTSU, HiroakiOHIRA, YoshinoriEGUCHI, YoshiakiYAMAMOTO, Masayuki
    • G06F3/06
    • G06F3/0649G06F3/061G06F3/0685
    • If a monitor measurement cycle is set as a long cycle, promotion in a short cycle cannot be performed; and even if the number of I/Os is very large in response to fluctuations of the number of I/Os in several minutes to several hours of normal work, pages will be promoted after waiting for several weeks. As a result, I/Os which could have normally accepted by an upper tier will be accepted by a lower tier, which results in a problem of worsening the performance efficiency. A monitoring system capable of preventing demotion due to temporary reduction of the number of I/Os for specific pages from a viewpoint of a long cycle and enabling prompt promotion in response to an increase of the number of I/Os for 3 the specific pages is realized. A load index value defined from a viewpoint of a long cycle and a load index value defined from a viewpoint of a short cycle are updated based on the number of I/Os which is counted cyclically for each storage area. Promotion and demotion are implemented based on a value(s) calculated from these load index values.
    • 如果监视器测量周期设置为长周期,则不能执行短周期内的升级; 即使I / O的数量在正常工作的几分钟到几个小时内因I / O数量的波动而非常大,等待几周后页面也会被提升。 因此,上层通常可以接受的I / O将被下层接受,导致性能效率恶化的问题。 能够防止由于从长周期的观点对特定页面的I / O数量的暂时减少而能够防止降级的监视系统,并且能够响应于特定页面的3的I / O数量的增加而能够及时促进 实现。 基于对于每个存储区域循环计数的I / O的数量,更新从从短周期的角度定义的长周期和负载指标值的观点定义的负载指标值。 基于从这些负荷指数值计算的值来实现升级和降级。
    • 6. 发明申请
    • STORAGE APPARATUS AND ITS CONTROL METHOD
    • 存储设备及其控制方法
    • WO2011045831A1
    • 2011-04-21
    • PCT/JP2009/005332
    • 2009-10-13
    • Hitachi,Ltd.Hitachi Computer Peripherals Co., Ltd.WATANABE, YasuoOHIRA, YoshinoriSHIGA, Kenta
    • WATANABE, YasuoOHIRA, YoshinoriSHIGA, Kenta
    • G06F11/14G06F11/10
    • G06F3/0665G06F3/0605G06F3/0647G06F3/067G06F3/0685G06F11/1008G06F11/1076G06F11/1456G06F11/1469
    • Proposed are a storage apparatus and its control method capable of restoring data of a virtual page to an appropriate device hierarchy according to its data value. This storage apparatus stores, in a backup-destination storage medium, data stored in the respective physical pages allocated with the virtual volume and management information of the virtual volume including information concerning the device hierarchy to which the respective physical pages belong according to a backup command of the virtual volume, and allocates a physical page of the same device hierarchy as the device hierarchy of the physical page that was allocated before the backup to each of the restoration-target virtual pages of the virtual volume, respectively, and writes corresponding data, which was read from the storage medium, into each of the allocated physical pages according to a restoration command of the virtual volume and based on the management information of the virtual volume stored in the storage medium.
    • 提出了一种存储装置及其控制方法,其能够根据虚拟页面的数据值将虚拟页面的数据恢复到适当的设备层级。 该存储装置在备份 - 目的地存储介质中存储分配有虚拟卷的各个物理页面中的数据和虚拟卷的管理信息,该数据包括与各个物理页面所属的设备层次结构有关的信息,根据备份命令 ,并且将与备份前分配的物理页面的设备层次结构相同的设备层次结构的物理页面分别分配给虚拟卷的每个恢复目标虚拟页面,并写入对应的数据, 根据虚拟卷的恢复命令,根据存储在存储介质中的虚拟卷的管理信息,将从存储介质读取的数据从存储介质读取到每个分配的物理页面中。