INFORMATION PROCESSOR, INFORMATION PROCESSING SYSTEM AND PROGRAM

To provide an information processor that prevents latest data of a first server from being replaced with old data of a second server so as to suppress data loss.SOLUTION: When a first server recovers from a stop into an operational system, a determination unit of a second server determines whether o...

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Bibliographic Details
Main Authors FUKUDA SHINICHIRO, NONAKA TAKASHI, TAKAOCHI KANAME
Format Patent
LanguageEnglish
Japanese
Published 03.06.2021
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:To provide an information processor that prevents latest data of a first server from being replaced with old data of a second server so as to suppress data loss.SOLUTION: When a first server recovers from a stop into an operational system, a determination unit of a second server determines whether or not mirroring is incomplete before the stop and corresponding data update is not been reflected in the second server. Then, when the determination unit determines that the slice is not a slice whose mirroring is incomplete before the stop, an execution unit of the second server copies the slice data to the first server.SELECTED DRAWING: Figure 4 【課題】第１サーバの最新データが第２サーバの古いデータに置き換えられることを防ぎ、データロストを抑止すること。【解決手段】第１サーバが停止から運用系に復旧する際に、第２サーバの判定部が、停止前にミラーリングが未完了で、第２サーバにおいて当該データ更新が未反映であるスライスであるか否かを判定する。そして、停止前にミラーリングが未完了であるスライスでないと判定部により判定されると、第２サーバの実行部が、スライスのデータを第１サーバにコピーする。【選択図】図４
Bibliography:Application Number: JP20190213846