07243256 is referenced by 18 patents and cites 125 patents.

The data is automatically recovered to a desired arbitrary point in an external storage without imposing a burden on the host computer. An application on a host computer instructs data recovery control processing of a disk control apparatus to set a recovery opportunity. It is possible to register arbitrary plural points as a recoverable point by setting a recovery flag included in journal data. In the case in which data is recovered due to occurrence of a failure or the like, the application requests a list showing recovery opportunities which have already been set. The application designates a point to which data is recovered on the basis of the recovery opportunity list. The disk control apparatus recovers the data to the designated point on the basis of a backup disk and a journal disk.

Title
External storage and data recovery method for external storage as well as program
Application Number
11/448860
Publication Number
7243256 (B2)
Application Date
June 8, 2006
Publication Date
July 10, 2007
Inventor
Kazuhito Suishu
Odawara
JP
Masanao Tsuboki
Oiso
JP
Keiichi Kaiya
Hadano
JP
Agent
Mattingly Stanger Malur & Brundidge P C
Assignee
Hitachi
JP
IPC
G06F 11/00
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