Management of file extent mapping to hasten mirror breaking...

Details Management of file extent mapping to hasten mirror breaking... Management of file extent mapping to hasten mirror breaking...

2005-08-23

2005-08-23

Wong, Leslie (Department: 2167)

Data processing: database and file management or data structures

Database design

Data structure types

C711S162000

Reexamination Certificate

active

06934725

ABSTRACT:
An enterprise storage system for performing a file level backup operation on data using a mirror disk and a primary disk includes a split mechanism to split the mirror disk from the primary disk before backing data files up from said mirror disk to said sequential storage media and an extent mapping mechanism to perform extent mapping on files to be backed up in a given backup session before the split mechanism splits the mirror for the same given backup session, and an extent map check and update mechanism to check, after the split mechanism splits the mirror for the same given backup session, whether any files have been updated in a manner so as to require additional or revised extent map information.

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Dill: “EMC Best Practices: Symmetrix Connect and File Level Granularity”; EMC Corporation; BP-00008, Feb. 27, 2001; pp. 1-31.

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