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2. 发明专利

JP2005215940A Storage system, server apparatus, and preceding copy data preparation method 有权
标题翻译：存储系统，服务器设备和预处理数据准备方法
公开(公告)号：JP2005215940A
公开(公告)日：2005-08-11
申请号：JP2004021104
申请日：2004-01-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： NAKANO TAKAHIRO , HARA JUNICHI , AOYAMA TAKESHI
IPC分类号： G06F12/00
摘要： PROBLEM TO BE SOLVED: To enhance access performance with respect to a disk device. SOLUTION: A storage system comprises: at least one CPU (Central Processing Unit); a memory; at least one network I/F (Interface); a server apparatus having at least one storage I/F; and at least one disk connected to the storage I/F. The server apparatus has a snapshot management part which maintains and manages snapshot of the disk apparatus. The disk apparatus has an operational volume which performs ordinary read/write and a differential volume which stores differential data of snapshot of the operational volume. The snapshot management part stores data on the operational volume in the differential volume, provides a preceding copy area to store its location information, and when a free area on the differential volume becomes insufficient, discards the stored location information and uses the preceding copy area as the free area. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提高对磁盘设备的访问性能。解决方案：存储系统包括：至少一个CPU（中央处理单元）; 记忆至少一个网络I / F（接口）; 具有至少一个存储I / F的服务器设备; 以及连接到存储I / F的至少一个盘。服务器装置具有维护和管理盘装置的快照的快照管理部。磁盘装置具有执行普通读/写的操作量和存储操作卷的快照的差分数据的差分卷。快照管理部分存储差分卷中的操作卷的数据，提供前一个复制区以存储其位置信息，并且当差分卷上的空闲区变得不足时，丢弃所存储的位置信息并将前一个复制区用作自由区。版权所有（C）2005，JPO＆NCIPI

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