Patent classifications
G
PHYSICS
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G11
INFORMATION STORAGE
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G11B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
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G11B2220/40
Combinations of multiple record carriers
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G11B2220/45
Hierarchical combination of record carriers, e.g. HDD for fast access, optical discs for long term storage or tapes for backup
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G11B2220/455
said record carriers being in one device and being used as primary and secondary/backup media, e.g. HDD-DVD combo device, or as source and target media, e.g. PC and portable player
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