Accumulating access frequency and file attributes for supporting policy based storage management
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A policy and file technology, applied in the field of storage network, can solve the problems of increased waiting time, unorganized efficiency, high waiting time and outdated results
Inactive Publication Date: 2008-09-10
CISCO TECH INC
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In some contexts, high latency will make results stale
[0010] Additionally, NAS file servers can become disorganized and inefficient, for example by storing critical data alongside other non-critical data
For example, a large multimedia collection of MP3s used by employees for recreation can increase the wait time for receiving information that is more relevant to business productivity, such as financial records
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[0027] A system and method for utilizing data related to access frequency and accumulation of file attributes to perform policy-based storage management. Policies may include rules establishing which objects are migrated from a source file server to a destination file server. For example, bulky multimedia files that consume bandwidth on expensive or critical file servers do not add much value to business productivity and can be migrated to inexpensive or less critical file servers. In one embodiment, a NAS (Network Attached Storage) switch in the data path of the client and the NAS file server on the storage network utilizes file handles independent of location on the storage network to enable selective migration. The mapping between file handles that are static and locations that can be dynamic allows clients to access objects post-migration using file handles that persist through the migration process.
[0028] figure 1is a high-level block diagram illustrating a storage ...
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Abstract
A system and method for performing policy-based storage management using data related to access frequency and file attribute accumulation (chart 1). A switch device provides transparency for transactions between a client and a storage network (chart 1). The transparency allows objects to be moved on the storage network without affecting a reference to the object used by the client (chart 1). A monitoring module generates accumulation data associated with the transactions for use in policy-based management (chart 1). The accumulation data can describe uses of the file such as how often certain files are accessed, modifications to files such as creations of new directories or files, and other uses (chart 1).
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[0001] Inventors: Panagiotis Tsirigotis, Geetha Srikantan, Thomas K. Wong, ChiMing Wong, Anand Iyengar, Rajeev Chawla, Richard Simpkins, Zuwei Liu, Gaurav Gupta. Matthew Seitz and Yu Cheong Chan [0002] Cross References to Related Applications [0003] This application claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 60 / 722.465, filed September 30, 2005, by Wong et al. ; this application claims priority under 35 U.S.C. §120 as a continuation-in-part of U.S. Patent Application No. 11 / 241,554, filed September 30, 2005, by Wong et al., entitled "STORAGE POLICY MONITORING FOR A STORAGE NETWORK"; and this Application and U.S. Patent Application No. 10 / 831,376, filed April 23, 2004, by Thomas K. Wong et al., entitled "TRANSPARENTFILE MIGRATION USING NAMESPACE REPLICATION," and Thomas K. Wong et al., filed April 23, 2004 Related is US Patent Application No. 10 / 831,701 for "TRANSPARENT FILE REPLICATION USING NAMESPACE REPLICATION," each of which is h...
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