STORAGE DEVICE ACCESS MEDIATION

A system is configured to use a de-randomizer and budget data structure to economize I/O operations for a shared storage device while still allowing access to the device to a number of different entities. Embodiments can identify a comparatively low cost next operation as compared to other I/O opera...

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Bibliographische Detailangaben
Hauptverfasser: SHANKAR, Vinod, D'AMATO, Andrea, KUZNETSOV, Slava, PETTER, Vladimir
Format: Patent
Sprache:eng ; fre ; ger
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Zusammenfassung:A system is configured to use a de-randomizer and budget data structure to economize I/O operations for a shared storage device while still allowing access to the device to a number of different entities. Embodiments can identify a comparatively low cost next operation as compared to other I/O operations, including a cost for seek time, for a first entity to dispatch to the storage device when the first entity has sufficient budget to have the I/O operation performed on its behalf and to identify an I/O operation for a second entity to dispatch to the storage device when there is insufficient budget for the first entity.