RAID system and method compatible with improved drive select

RAID system and method compatible with improved drive select

A RAID system is provided which can be implemented as a hardware RAID system while avoiding certain shortcomings of previous RAID systems. The RAID system makes it possible to avoid or reduce the number of buffers or processors and can take advantage of drive logic to achieve RAID functions or enhan...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: SCHRECK ERHARD, SONNENFELD RICHARD, KVAMME ERIC, CHATARD THIERRY, KIMBALL ROBERT L, SCHARDT BRUCE, ALEXOPOULOS PANTELIS, DUELL SAMUEL R, HILLER BERNHARD, GRIFFITHS JEFF, LEE MICHAEL, FITZGERALD, LEGAL REPRESENTATIVE KATHLEEN, LEACH LEROY, MCGRATH JAMES, SCHLUMBERGER MAURICE, BRUNNETT DON, BUDDHAVARAM CHANDRA, HERNANDEZ JOHANNA, MILBY ROBERT, CHEW DAVID
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A RAID system is provided which can be implemented as a hardware RAID system while avoiding certain shortcomings of previous RAID systems. The RAID system makes it possible to avoid or reduce the number of buffers or processors and can take advantage of drive logic to achieve RAID functions or enhancements. RAID functionality can be provided in a manner to accommodate one or more ATA drive interfaces. To avoid drive replacement problems, host requests for drive serial numbers are responded to with a mirror serial number. In one embodiment, the read address is used to select which drive will perform a read operation.