发明名称 |
Method and storage system for accessing data using a differential snapshot |
摘要 |
A method of managing data by a storage system having first and second volumes according to a command from a server computer, including receiving a data access command from the server computer; specifying a data area that is designated in the data access command and reading data in the data area from the first volume; judging whether the data access command contains a data evacuating instruction; judging whether the data in the data area has been evacuated to the second volume when the data read command contains the data evacuating instruction; evacuating the data in the data area to the second volume when the data in the data area has not been evacuated to the second volume; and sending the data in the data area to the server computer. The invention reduces loads on the storage system when a differential snapshot is used.
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申请公布号 |
US2007271426(A1) |
申请公布日期 |
2007.11.22 |
申请号 |
US20060454088 |
申请日期 |
2006.06.16 |
申请人 |
WATANABE SATORU;SUZUKI YOSHIO;FUJIWARA SHINJI |
发明人 |
WATANABE SATORU;SUZUKI YOSHIO;FUJIWARA SHINJI |
分类号 |
G06F13/00;G06F12/16 |
主分类号 |
G06F13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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