| 摘要 |
A controller in local site can process a request for storage resources from requestors like host computers, backup servers and tier manager. The controller checks own resource information including information about storage resources in the local site, according to requirements based on the request. The controller also asks other controllers in remote sites to check storage resources in each remote site. The controller in the local site collects the answers about available storage resources (including resources in the local site) under the requirements and selects storage resources to be used. Then the controller in the local site notifies the selected storage resources to the requester. Release of storage resource can also be performed with communication between controllers. Computers and backup servers can utilize these functions provided by the controllers to obtain and release the storage resources.
|
