Systems for managing a cache in a multi-node virtual tape controller

According to one embodiment, a system includes a virtual tape library having a cache, a virtual tape controller (VTC) coupled to the virtual tape library, and an interface for coupling at least one host to the VTC. The cache is shared by all the hosts, and a common view of a cache state, a virtual l...

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Bibliographic Details
Main Authors BEESTON RALPH T, LYMAN JOEL K, LEE DUKE A, LUCIANI DAVID, DAWSON ERIKA M
Format Patent
LanguageEnglish
Published 07.10.2014
Subjects
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Summary:According to one embodiment, a system includes a virtual tape library having a cache, a virtual tape controller (VTC) coupled to the virtual tape library, and an interface for coupling at least one host to the VTC. The cache is shared by all the hosts, and a common view of a cache state, a virtual library state, and a number of write requests pending is provided to all the hosts by the VTC.
Bibliography:Application Number: US20100693359