Method and apparatus for disk cache translation between systems
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United States of America Patent
Stats
-
Jun 1, 2004
Grant Date -
N/A
app pub date -
Dec 21, 2001
filing date -
Dec 21, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A disk cache translation system for mapping data record lengths between systems having different data record lengths. Command queue (315) maps into initiation queue (305) to allow I/O manager (230) to manage I/O requests from operating system (125). I/O requests are statused by I/O manager (230) using status queue (325). Store-thru cache (280) provides a single interface to disk array (270) such that disk array write operations are reported complete only when user memory (250), I/O cache (280) and disk array (270) are synchronized. Data record length translations are performed using I/O cache (280) in order to align data record length differences between operating system (125) and I/O device (270).
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