# US 2013/0159651 A1 · Storage system and storage migration method

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- Number: US 2013/0159651 A1
- Document ID: US20130159651A1
- Status: Published application
- Kind: A1
- Application number: 13/765,076
- Filed: 2013-02-12
- Published: 2013-06-20
- Earliest claimed: 2007-01-19
- Assignees: Hitachi, Ltd.
- Inventors: Yoshiaki EGUCHI; Yasutomo Yamamoto; Ai Satoyama
- Web page: https://patentgrep.com/patent/US20130159651A1

## CPC

- G06F 3/0647: {Migration mechanisms}
- G06F 3/061: {Improving I/O performance}
- G06F 3/0614: {Improving the reliability of storage systems}
- G06F 3/067: {Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]}
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

A storage system and storage migration method where migration may be carried out to an access destination of a host apparatus without stopping the exchange of data between the host apparatus and the storage apparatus. This system is provided with a host apparatus inputting and outputting requests for data, a migration source storage apparatus having logical unit(s) correlated to storage regions of physical devices for storing the data, a migration destination storage apparatus having logical unit(s). The system also has an editing unit for editing configuration control information relating to the logical unit(s) for the migration source so as to match with settings for the migration destination storage apparatus, an importing unit for importing edited configuration control information to the migration destination storage apparatus, and a mapping unit for mapping the logical unit(s) of the migration source to the logical unit(s) of the migration destination.

## Claims

### Claim 1

A storage system comprising:
a host apparatus inputting and outputting requests for data;
a migration source storage apparatus capable of being recognized from the host apparatus, having one or more logical units correlated to storage regions of physical devices for storing the data;
a migration destination storage apparatus having one or more logical units of a migration destination capable of being recognized from the host apparatus;
an editing unit for editing configuration control information relating to the logical unit(s) for the migration source so as to match with settings for the migration destination storage apparatus;
an importing unit for importing edited configuration control information that is the configuration control information edited to the migration destination storage apparatus; and
a mapping unit for mapping the logical unit(s) of the migration source to the logical unit(s) of the migration destination.