Computer system and method of updating authentication information of computer system

摘要

The storage system (SD) of the present invention is able to update a secret while maintaining a session between a host and storage. The administrator configures a new secret for the host (HD) and the storage. The session manager (HD3) issues a request to the storage to open a session that uses the new secret. The session manager (SD3) opens a session that uses the new secret following authentication. A response to an old command issued prior to the secret update is transmitted from the storage to the host via a session that uses an old secret. A new command following the secret update is transmitted from the host to the storage via the session that uses the new secret. When all the old command processing is complete, the old secret using session is closed.