Disk subsystem, computer system, storage managing method and program

• US 20040186899A1
• Filed: 08/28/2003
• Published: 09/23/2004
• Est. Priority Date: 11/05/2002
• Status: Active Grant

• Current Assignee: Rakuten Group, Inc.
• Original Assignee: Hitachi, Ltd.
• Inventors: Hiraiwa, Yuri, Sakuraba, Taketoshi, Miyata, Katsuhisa, Nagasuka, Hirofumi, Kiyoi, Masahiro, Kiyoi, Keiko
• Granted Patent: US 7,039,707 B2
• Time in Patent Office: Days
• US Class Current: 709/213
• CPC Class Codes: G06F 11/3485 for I/O devices
• CPC Class Codes: G06F 3/0604 Improving or facilitating administration, e.g. storage management
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0653 Monitoring storage devices or systems
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: Y10S 707/99953 Recoverability
• CPC Class Codes: Y10S 707/99955 Archiving or backup

Abstract

When collecting information about management of a storage of a disk subsystem, loads imposed on a host computer and a network are alleviated to improve the throughput of a computer system having the storage. The disk subsystem includes a CPU and a main memory and information on a disk is collected in response to a request from a management computer. An information collection program is operated on the disk subsystem, whereby, volume management information can be edited on the disk subsystem and utilized by the management computer.

Claims

1. A disk subsystem comprising a disk storage accessible as logical volumes from a computer through a network, said disk storage including:

a CPU; and

a memory,

wherein said CPU reads volume management information owned by said disk storage to form information representing a configuration of the logical volumes, and said memory holds the logical volume configuration information from said CPU.

2. A computer system comprising a computer and a disk subsystem accessible as logical volumes from said computer through a network,

said computer system further comprising a management computer, and said disk storage including:

a CPU; and

a memory,

wherein said CPU reads volume management information owned by said disk storage to form logical volume configuration information and said memory holds the logical volume configuration information, and

wherein said management computer can access information extracted from the volume management information based on said logical volume configuration information.

3. A storage managing method in a disk subsystem including a disk storage accessible as logical volumes from a computer through a network, comprising the steps of:

reading volume management information held in said disk storage;

forming information representing a configuration of logical volumes from said management information; and

executing said reading step and said forming step in the above order.

4. A storage managing method according to claim 3 further comprising:

creating volume management information extracted data based on said logical volume configuration information and transmitting the created data to a management computer connected to said network; and

executing said creating step after execution of said reading step and said forming step.

5. A management program for managing volumes of a disk subsystem having a disk storage accessible as logical volumes from a computer through a network, said management program implementing:

a function of reading volume management information held in said disk storage;

a function of forming logical volume configuration information from said management information; and

a function of extracting information from the volume management information based on said logical volume configuration information and transmitting the extracted information to a management computer connected to said network.