Computer system, storage and storage utilization and monitoring method

Abstract

A computer system includes a plurality of computers and at least one storage connected to the plurality of computers. The storage includes a device that obtains information concerning areas within the storage that are used by the respective plurality of computers, a device that obtains information concerning a capacity within each of the areas that is used by each of the plurality of computers to store data, and a device that notifies at least one of the plurality of computers of a status of the areas within the at least one storage. The computer system utilizes and manage the storage, without having each of the computers utilize and manage the storages with regard to storage capacity.

1 - 21 . (canceled)  
   
   
       22 . A storage to be coupled to at least one of computers via a network, comprising: 
 a storage controller to communicate with the computers via a network; and,    a first volume and a second volume which are connected to the storage controller and which are provided, to store data, with the host computer;    wherein the first volume is allocated to the first computer and is managed by a first user and the second volume is allocated to the second computer and is managed by a second user;    when an used capacity of the first volume is exceed in a first predetermined capacity, the storage controller checks an used capacity of the second volume and sends, to the second user via a network, a notification for reducing unused capacity of the second volume to the second user on the basis of results of check.