Outboard back-up and recovery system with transfer of randomly accessible data sets between cache and host and cache and tape simultaneously
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jul 5, 1988
Grant Date -
N/A
app pub date -
Mar 5, 1984
filing date -
Mar 5, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A host connected outboard back-up and recovery system has a tape drive connected to a plural port solid-state cache memory which, in turn, is connected to a disk drive. Data to be backed-up can first be copied from the disk drive to the cache and then from the cache to the tape drive in back-up operations, so that the relative speeds of the disk drive and the tape need not be matched. An outboard controller controls flow of the data between the disk drive and the tape drive and additionally controls storage of the data on the tape, so that host computer involvement is avoided.
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