Mailbox for controlling storage subsystem reconfigurations

The invention relates to data storage of a distributed storage subsystem. A method balances workloads of storage devices of a storage subsystem. The method includes reading a mailbox to obtain control parameters and collecting historical data on numbers of accesses to storage volumes of the storage...

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Bibliographic Details
Main Authors Zakai, Avinoam, DesRoches, David Wayne, Dubrovsky, Victoria, Bar-Nefy, Shai, Michel, Ruben
Format Patent
LanguageEnglish
Published 12.11.2002
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Summary:The invention relates to data storage of a distributed storage subsystem. A method balances workloads of storage devices of a storage subsystem. The method includes reading a mailbox to obtain control parameters and collecting historical data on numbers of accesses to storage volumes of the storage devices. The control parameters are written in the mailbox by host devices. The method also includes selecting data swaps that lead to better balanced workloads for storage devices based on the historical data. The act of selecting and/or the act of collecting being initialized by the control parameters.