Deferred writing of data to be synchronized on magnetic tape...

Electrical computers and digital processing systems: memory – Storage accessing and control – Specific memory composition

Reexamination Certificate

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Details

C711S154000, C711S161000

Reexamination Certificate

active

11022475

ABSTRACT:
Data of a transaction to be synchronized is stored to a non-volatile store, and a Command Complete response is provided. Data of the transaction is supplied to a tape drive for writing to a magnetic tape. The storing, responding, and supplying operations are repeated for subsequent transactions. A Deferred Synchronize Command, specifying a previously supplied transaction, is provided to the tape drive, for writing data of the specified transaction. The tape drive, subsequent to writing all the data of the previously supplied transaction to magnetic tape, provides a Tape Command Complete, whereupon the data of the previously supplied transaction stored to the non-volatile store may be overwritten.

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patent: 2001/0034728 (2001-10-01), McBride et al.
patent: 2003/0043924 (2003-03-01), Haddad et al.

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