Patent ID: 6917967

Claim:
A system, comprising: a storage controller configured to control one or more storage devices, wherein the storage controller includes a memory controller and a memory, wherein the memory includes a reflected region and a semaphore region; an interconnect coupling the memory controller to an other memory controller included in an other storage controller; wherein in response to receiving a reflected region write request to perform a write access to the reflected region, the memory controller is configured to convey the reflected region write request to the other memory controller via the interconnect and to perform the write access to the reflected region; and wherein in response to receiving a semaphore region write request to perform a write access to the semaphore region, the memory controller is configured to convey the semaphore region write request to the other memory controller via the interconnect and, upon receiving an indication via the interconnect that the other memory controller has performed the write access requested in the semaphore region write request, to perform the write access to the semaphore region.