JP2005276233A5

JP2005276233A5 -

Info

Publication number: JP2005276233A5
Application number: JP2005124417A
Authority: JP
Filing date: 2005-04-22
Publication date: 2006-04-27
Anticipated expiration: 2019-03-12

Claims

A computer system for interconnecting a plurality of client computers, a storage shared by the client computers, a management console for managing the storage, and the plurality of client computers, the storage and the management console A computer system comprising a connecting device for the purpose.

With multiple calculators,
  A storage system connected to the plurality of computers,
  The storage system has a plurality of logical units,
  A logical unit that is shared among the plurality of logical units is set for a plurality of computers,
Each logical unit is assigned an internal logical unit number and a virtual logical unit number,
  The internal logical unit number is a number used for managing logical units in the storage system, and different internal logical unit numbers are assigned to the plurality of logical units,
  The virtual logical unit number is a number used by the computer to confirm the logical unit accessed from the computer.
One or more logical units accessed from each computer are assigned a virtual logical unit number starting from 0 for each computer, and virtual logical unit number 0 is shared by a plurality of computers for each computer. A system that is assigned to a logical unit.

The system of claim 2, comprising:
The storage system stores a correspondence relationship between an internal logical unit number, a virtual logical unit number, and a computer using the virtual logical unit number.

The system according to claim 3, wherein
Each of the plurality of computers, when searching for a logical unit accessible from the computer, starts a search from a logical unit having a virtual logical unit number of 0 and searches for logical units having consecutive virtual logical unit numbers. A system characterized by

The system of claim 2, comprising:
Each of the plurality of computers searches for a logical unit accessed from the computer, and executes a boot-up process of an operation system stored in the detected logical unit.

The system of claim 2, comprising:
Each computer performs boot-up processing of an operating system stored in a shared logical unit among a plurality of computers having a virtual logical unit number of 0.

A storage medium storing a program for a plurality of computers to use a storage system having a plurality of logical units, wherein the program is
  For a plurality of computers, among the plurality of logical units, setting a shared logical unit;
  An internal logical unit number assigning step for assigning an internal logical unit number used for managing logical units in the storage system to each of the plurality of logical units;
  A virtual logical unit number assigning step for assigning a virtual logical unit number used when each of the plurality of computers detects a logical unit accessed from the computer to a logical unit accessed from the computer among the plurality of logical units. And
  The virtual logical unit number assigning step includes a step of assigning a virtual logical unit number starting from 0 for each computer to one or more logical units for each computer accessed from each computer, and a virtual logical unit number 0 Includes a step assigned to a logical unit shared by a plurality of computers for each computer.

A recording medium on which the program according to claim 7 is recorded,
  The storage system includes a memory for storing a correspondence relationship between an internal logical unit number, a virtual logical unit number, and a computer using the virtual logical unit number,
  The internal logical unit number assigning step includes a step of registering an internal logical unit number assigned to a logical unit in the memory,
  The virtual logical unit number assigning step includes a step of registering a virtual logical unit number assigned to a logical unit and identification information of a computer that uses the virtual logical unit number in the memory. Recording medium.

A storage system connected to multiple computers,
  A control device;
  A plurality of logical units,
  Among the plurality of logical units, a shared logical unit is set for a plurality of computers.
Each logical unit is assigned an internal logical unit number and a virtual logical unit number,
  The internal logical unit number is a number used for managing logical units in the storage system,
  The virtual logical unit number is a number used when each computer confirms the logical unit accessed from the computer.
One or more logical units accessed from each computer are assigned a virtual logical unit number starting from 0 for each computer, and virtual logical unit number 0 is shared by a plurality of computers for each computer. A storage system that is assigned to a logical unit.

The storage system according to claim 9, wherein
The control system stores a correspondence relationship between an internal logical unit number, a virtual logical unit number, and a computer using the virtual logical unit number.

The storage system according to claim 9, wherein
A storage system characterized in that an operation system used by a plurality of computers is stored in a logical unit shared by the plurality of computers.

A method of using a storage system having a plurality of logical units by a plurality of computers,
  An internal logical unit number assigning step for assigning an internal logical unit number used for managing logical units in the storage system to each of the plurality of logical units;
  For each of the plurality of logical units, setting a computer that accesses the logical unit;
  Virtual logical unit number assignment that assigns a virtual logical unit number used when each of the plurality of computers detects a logical unit accessed from the computer to a logical unit accessed from the computer among the plurality of logical units. Steps,
  For each of the plurality of computers, a logical unit detection step of detecting a logical unit accessed from the computer using the virtual logical unit number,
  The virtual logical unit number assignment step includes a step of assigning a virtual logical unit number starting from 0 for each computer to one or more logical units for each computer accessed from each computer, and the virtual logical unit number 0 is A method of using a storage system, comprising the step of being assigned to a logical unit shared by a plurality of computers.

A method of using a storage system according to claim 12,
Furthermore, the storage system has a step of storing a correspondence relationship between an internal logical unit number, a virtual logical unit number, and a computer using the virtual logical unit number.

A method of using the storage system according to claim 13,
In the logical unit detection step, each computer starts a search from a logical unit having a virtual logical unit number of 0, searches for logical units having a continuous virtual logical unit number, and the logical unit having a certain virtual logical unit number A method of using a storage system, comprising a step of stopping a search for a logical unit when a response indicating that a unit does not exist is received.

A method of using a storage system according to claim 12,
The use of the storage system further comprising the step of executing boot-up processing of an operation system in which each of the plurality of computers is stored in a logical unit whose virtual logical unit number detected by the computer is 0 Method.