Storage system

Details Storage system Storage system

2011-03-22

2011-03-22

Hafiz, Tariq (Department: 2182)

Electrical computers and digital data processing systems: input/

Input/output data processing

Concurrent input/output processing and data transfer

C710S028000, C710S029000, C710S036000, C710S038000, C710S040000, C710S074000

Reexamination Certificate

active

07912996

ABSTRACT:
A host I/F unit has a management table for managing an MPPK which is in-charge of the control of input/output processing for a storage area of an LDEV, and if a host computer transmits an input/output request for the LDEV, the host I/F unit transfers the input/output request to the MPPK which is in-charge of the input/output processing for the LDEV based on the management table, an MP of the MPPK performs the input/output processing based on the input/output request, and the MP of the MPPK also judges whether the MPPK that is in-charge of the input/output processing for the LDEV is to be changed, and sets the management table so that an MPPK which is different from the MPPK that is in-charge is to be in-charge of the input/output processing for the LDEV.

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