Storage apparatus and method of controlling the same

摘要

A storage apparatus 10 includes a communication control processor 11 that is a processor configured to control communications with a host apparatus 3, and plurality of main processors 12 each configured to perform an I/O process on a storage drive 171 according to an I/O request received from the host apparatus 3. The storage apparatus 10 manages data to be stored or that has been stored in the storage drive 171 in accordance with the CKD format. The storage apparatus 10 distributes the I/O process to the plurality of main processors 12 in units of the data fields on basis of the operation rates of the respective main processors 12, information on a C field, a K field, and a D field that are data fields forming a record of data targeted by the I/O process and managed in CKD format, and an I/O load indicator being a load indicator of the I/O process currently running on each of the main processors.

主权项

1. A storage apparatus, comprising:
a communication control processor, configured to control communications with an external apparatus; and a plurality of main processors, each main processor configured to perform an input/output (I/O) process on a storage drive according to an I/O request received from the external apparatus, wherein the storage apparatus:
manages data to be stored or data that has been stored in the storage drive in accordance with a Count Key Data (CKD) format, which includes a count (C) field, a key (K) field, and a data (D) field;distributes the I/O process to a plurality of the main processors in units of data fields on a basis of operation rates of the respective main processors, wherein the operation rate of a main processor is a percentage of a given period of time that the main processor was operating, information of the fields forming a record of data targeted by the I/O process, and an I/O load indicator, which is a load indicator of the I/O process currently running on each of the main processors; anddoes not distribute the I/O process to the plurality of main processors when the I/O load indicators of all the main processors other than the main processor receiving the I/O request are not zero, and when the I/O load indicator of the main processor receiving the I/O request is equal to or less than the I/O load indicators of all the other main processors.