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    • 2. 发明申请
    • Primary stub file retention and secondary retention coordination in a hierarchical storage system
    • 分层存储系统中的主存根文件保留和辅助保留协调
    • US20070179990A1
    • 2007-08-02
    • US11343313
    • 2006-01-31
    • Eyal ZimranChristian ChubaChristopher StaceyMary Walker
    • Eyal ZimranChristian ChubaChristopher StaceyMary Walker
    • G06F17/30
    • G06F17/30221G06F17/30085G06F17/30153
    • A protected file is retained in secondary storage for a retention period, and a corresponding stub file is retained in primary storage for the retention period. The stub file retains attributes of the file indicating a location of the file data in the secondary storage and indicting that the stub file is to be retained for the retention period. A system administrator may instruct a primary file server that a secondary file server supports retention based protection and it is desired to protect stub files corresponding to protected files that are migrated to the secondary file server. The primary file server may request the secondary file server to return a protection status of the file after migration. This enables automatic policy-based migration to both file level retention (FLR) and non-FLR retention protected secondary storage from diverse applications accessing FLR or non-FLR files in the primary storage.
    • 受保护的文件保留在辅助存储器中保留期限,并且相应的存根文件将保留在主存储中以保留期限。 存根文件保留文件的属性,该属性指示辅助存储器中的文件数据的位置,并指示在保留期间保留存根文件。 系统管理员可以指示主文件服务器辅助文件服务器支持基于保留的保护,并且希望保护对应于被迁移到辅助文件服务器的受保护文件的存根文件。 主文件服务器可能会请求辅助文件服务器在迁移后返回文件的保护状态。 这样可以实现基于策略的自动迁移,可以从访问主存储中的FLR或非FLR文件的各种应用程序的文件级别保留(FLR)和非FLR保留保护的辅助存储进行迁移。