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Method and apparatus for enhancing throughput of disk array data transfers in a controller
| Details |
Inventors: Weber, Bret S.;
Assignee: Symbios Logic Inc. (Fort Collins, CO)
Primary Examiner: Auve; Glenn A.
Assistant Examiner: Seto; Jeffrey K.
Attorney, Agent or Firm: Maginot; Paul J., Bailey; Wayne P.
A method for transferring data in a controller having a processor and a controller support device, with the controller connected to a host device and a disk drive. The method includes the steps of providing the controller with a first bus and a second bus, connecting a first bus between the disk drive and the host device, connecting a second bus between the processor and the controller support device, transferring first data between the disk drive and the host device across the first bus, and transferring second data between the processor and the controller support device across the second bus without consuming any portion of the bandwidth of the first bus. A controller architecture is also disclosed. |
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DETAILED DESCRIPTION In accordance with one embodiment of the present invention, there is provided a method for transferring data in a controller having a processor, a first bus and a controller resource, with the controller being connected between a host device and a disk drive.
The method includes the steps of transferring first data between the host device and the disk drive across the first bus, and transferring second data between the processor and the controller resource without consuming any portion of the bandwidth of the first bus.
Pursuant to another embodiment of the present invention, there is provided a method for transferring data in a controller having a processor and a controller support device, with the controller connected to a host device and a disk drive.
The method includes the steps of providing the controller with a first bus and a second bus, connecting a first bus between the disk drive and the host device, connecting a second bus between the processor and the controller support device, transferring first data between the disk drive and the host device across the first bus, and transferring second data between the processor and the controller support device across the second bus without consuming any portion of the bandwidth of the first bus.
Pursuant to yet another embodiment of the present invention, there is provided a controller connected to a host device and a disk drive, with the controller including a first bus connected between the host device and the disk drive, a processor, a controller support device, and a second bus connected between the processor and the controller support device, wherein all data transfers between the processor and the controller support device occur without consuming any portion of the bandwidth of the first bus.
It is therefore an object of the present invention to provide a new and useful method for transferring data in a controller.
It is therefore an object of the present invention to provide an improved method for transferring data in a controller
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