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    • 1. 发明申请
    • COMPUTER SYSTEM AND STORAGE CONTROL METHOD
    • 计算机系统和存储控制方法
    • US20130198457A1
    • 2013-08-01
    • US13577165
    • 2012-01-26
    • Masakazu KobayashiHiroshi NojimaTakuya Okamoto
    • Masakazu KobayashiHiroshi NojimaTakuya Okamoto
    • G06F12/02
    • G06F12/0866G06F2212/314
    • The entirety or a part of free space of a second storage device included in a host computer is used as a cache memory region (external cache) outside of a storage apparatus. If Input/Output (I/O) in the host computer is Write, a Write request is transmitted from the host computer to a storage apparatus, the storage apparatus writes data associated with the Write request into a main cache that is a cache memory region included in this storage apparatus, and the storage apparatus writes the data in the main cache into a first storage device included in the storage apparatus. The storage apparatus writes the data in the main cache into an external cache included in the host computer. If the I/O in the host computer is Read, the host computer determines whether or not Read data as target data of the Read exists in the external cache. If a result of the determination is positive, the host computer reads the Read data from the external cache.
    • 包含在主计算机中的第二存储装置的可用空间的整体或一部分被用作在存储装置之外的高速缓冲存储器区域(外部高速缓存)。 如果主计算机中的输入/输出(I / O)为写入,则从主计算机向存储装置发送写请求,存储装置将与写请求相关联的数据写入作为高速缓冲存储器区域的主缓存 包括在该存储装置中,并且存储装置将数据存储在主高速缓存中,以包含在存储装置中的第一存储装置中。 存储装置将主缓存中的数据写入包含在主计算机中的外部高速缓存。 如果主计算机中的I / O为读取,则主机确定读取数据作为Read的目标数据是否存在于外部缓存中。 如果确定结果为肯定,则主机从外部缓存读取读取数据。
    • 2. 发明授权
    • Computer system and storage control method
    • 计算机系统和存储控制方法
    • US09176881B2
    • 2015-11-03
    • US13577165
    • 2012-01-26
    • Masakazu KobayashiHiroshi NojimaTakuya Okamoto
    • Masakazu KobayashiHiroshi NojimaTakuya Okamoto
    • G06F12/08
    • G06F12/0866G06F2212/314
    • The entirety or a part of free space of a second storage device included in a host computer is used as a cache memory region (external cache) outside of a storage apparatus. If Input/Output (I/O) in the host computer is Write, a Write request is transmitted from the host computer to a storage apparatus, the storage apparatus writes data associated with the Write request into a main cache that is a cache memory region included in this storage apparatus, and the storage apparatus writes the data in the main cache into a first storage device included in the storage apparatus. The storage apparatus writes the data in the main cache into an external cache included in the host computer. If the I/O in the host computer is Read, the host computer determines whether or not Read data as target data of the Read exists in the external cache. If a result of the determination is positive, the host computer reads the Read data from the external cache.
    • 包含在主计算机中的第二存储装置的可用空间的整体或一部分被用作在存储装置之外的高速缓冲存储器区域(外部高速缓存)。 如果主计算机中的输入/输出(I / O)为写入,则从主计算机向存储装置发送写请求,存储装置将与写请求相关联的数据写入作为高速缓冲存储器区域的主缓存 包括在该存储装置中,并且存储装置将数据存储在主高速缓存中,以包含在存储装置中的第一存储装置中。 存储装置将主缓存中的数据写入包含在主计算机中的外部高速缓存。 如果主计算机中的I / O为读取,则主机确定读取数据作为Read的目标数据是否存在于外部缓存中。 如果确定结果为肯定,则主机从外部缓存读取读取数据。
    • 3. 发明申请
    • COMPUTER SYSTEM, FILE MANAGEMENT METHOD, AND STORAGE MEDIUM
    • 计算机系统,文件管理方法和存储介质
    • US20130166614A1
    • 2013-06-27
    • US13395501
    • 2011-12-27
    • Yuuki WatanabeTakuya OkamotoHiroshi Nojima
    • Yuuki WatanabeTakuya OkamotoHiroshi Nojima
    • G06F17/30
    • G06F16/185G06F16/192
    • A computer system of an embodiment includes a processor and a storage device for managing real file systems and a virtual file system virtualizing the real file systems to control relocation of a file in the virtual file system. Volumes different in access performance provided by a storage system are assigned to the real file systems belonging to tiers different in access performance. The storage device stores file usage state information representing usage states of files in the virtual file system and storage usage state information representing a usage state of the storage system. The processor generates control information associating characteristics of files with evaluation values of the tiers using the two pieces of information and determines an evaluation value for each of one or more relocation destination tier candidates of a first file in the virtual file system based a characteristic of the first file and the control information.
    • 实施例的计算机系统包括处理器和用于管理真实文件系统的存储设备和虚拟文件系统的虚拟文件系统,以控制虚拟文件系统中文件的重定位。 由存储系统提供的访问性能不同的卷被分配给属于访问性能不同的层的真实文件系统。 存储装置存储表示虚拟文件系统中的文件的使用状态的文件使用状态信息和表示存储系统的使用状态的存储使用状态信息。 处理器使用两条信息来生成将文件的特征与层的评估值相关联的控制信息,并且基于所述虚拟文件系统的特性确定虚拟文件系统中的第一文件的一个或多个重定位目的地层候选中的每一个的评估值 第一个文件和控制信息。