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    • 7. 发明申请
    • ARCHIVING DATA OBJECTS USING SECONDARY COPIES
    • 使用次要副本来存档数据对象
    • WO2012045023A2
    • 2012-04-05
    • PCT/US2011054378
    • 2011-09-30
    • COMMVAULT SYSTEMS INCGOKHALE PARAGKOTTOMTHARAYIL RAJIVVARADHARAJAN PRAKASH
    • GOKHALE PARAGKOTTOMTHARAYIL RAJIVVARADHARAJAN PRAKASH
    • G06F12/16G06F12/00
    • G06F17/30073G06F3/0641G06F11/1402G06F11/1415G06F11/1448G06F11/1451G06F17/30309G06F17/30466G06F17/30584G06F2201/84
    • A system for archiving data objects using secondary copies is disclosed. The system creates one or more secondary copies of primary copy data that contains multiple data objects. The system maintains a first data structure that tracks the data objects for which the system has created secondary copies and the locations of the secondary copies. To archive data objects in the primary copy data, the system identifies data objects to be archived, verifies that previously-created secondary copies of the identified data objects exist, and replaces the identified data objects with stubs. The system maintains a second data structure that both tracks the stubs and refers to the first data structure, thereby creating an association between the stubs and the locations of the secondary copies. Notably, the system archives data objects in primary copy data without creating an additional or other secondary copy of the data objects. Instead, the association between the two data structures allows stubs to point to or refer to the previously-created secondary copy of the data objects. Accordingly, the existence of the previously-created secondary copy of the data objects allows the system to forego creating an additional or other secondary copy of the data objects, thereby saving resources.
    • 公开了一种使用次级副本存档数据对象的系统。 系统创建一个或多个包含多个数据对象的主副本数据的辅助副本。 该系统维护第一数据结构,该结构跟踪系统已经为其创建次要副本和次要副本的位置的数据对象。 要将数据对象存档到主要副本数据中,系统将识别要存档的数据对象,验证是否存在以前创建的已识别数据对象的辅助副本,并用存根替换已标识的数据对象。 系统维护第二数据结构,其既跟踪存根又参考第一数据结构,从而在存根和副数位的位置之间建立关联。 值得注意的是,系统在主要副本数据中存档数据对象,而不创建数据对象的附加副本或其他副本。 相反,两个数据结构之间的关联允许存根指向或引用先前创建的数据对象的辅助副本。 相应地,数据对象的先前创建的辅助副本的存在允许系统放弃创建数据对象的附加副本或其他辅助副本,从而节省资源。