US Patent No: 8,170,985
Number of patents in Portfolio can not be more than 2000
Primary stub file retention and secondary retention coordination in a hierarchical storage system
Stats
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May 1, 2012
Issued date -
Jan 31, 2006
filing date -
11/343,313
serial no -
In Force
status
Importance
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Abstract
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.
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First Claim
Related Publications
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International Classification(s)
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Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
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| 5,901,327 Bundling of write data from channel commands in a command chain for transmission over a data link between data storage systems for remote data mirroring | 437 | 1997 | |
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| 2006/0212,481 Distributed open writable snapshot copy facility using file migration policies | 26 | 2005 | |
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| 6,665,689 Backup and restore for heterogeneous file server environment | 31 | 2001 | |
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| 5,596,706 Highly reliable online system | 65 | 1994 | |
Patent Citation Ranking
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