METHOD AND APPARATUS TO SHARE HARDWARE RESOURCES ACROSS STORAGE CONTROLLERS WITHIN A SYSTEM USING RESOURCE SHARING MODULE

摘要

Disclosed are storage controllers that can share resources (e.g., memory, CPU cycles, I/O bandwidth, etc.). The storage controllers are coupled via a resource sharing cable. When one storage controller determines a resource constraint exists that would prevent completion of a command by the storage controller, the storage controller queries or determines an availability of the resource on a second storage controller. If the resource is available, and can be shared, the storage controller uses the resource on the second storage controller to complete the command.