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 <TITLE>DMF - Functional Overview</TITLE> 
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 <H1>DMF - Functional Overview</H1> 
 <P><UL>
<LI><H2>Mission: maintain free space on disk
</H2>
<UL>
<LI>Move old/big files to more efficient media
<LI>Migrate files automatically or manually
<LI>Maximize utilization of offline media
</UL></UL><UL>
<LI><H2>DMF manages native file system data
</H2>
<UL>
<LI>Inodes and directories are not migrated
<LI>Administrator orientation is file system
</UL></UL><UL>
<LI><H2>Administrator functions - Policy selection
</H2>
<UL>
<LI>File ranking rules (candidate list)
<LI>Capacity thresholds (file system monitor)
<LI>Number and location of offline copies
<LI>Tape management, journal backup and recovery
<LI>Tape merging (garbage collection)</UL></UL></P>
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