Patent ID: 7760463
Filing Date: 2010-07-20
Classification: G11B

Abstract:
1. A storage disk system, comprising: a plurality of disk platters mounted on a common spindle, the disk platters each having an upper surface and a lower surface; a drive motor operable to rotate the spindle to rotate the disk platters about a common axis; and two or more actuator assemblies, the actuator assemblies each having at least one actuator arm, the actuator arm(s) each having at least one read/write head configured such that each disk platter surface is only accessed by one read/write head, wherein a first actuator assembly and a first set of disk platter surfaces are associated as a first virtual disk, wherein a second actuator assembly and a second set of disk platter surfaces are associated as a second virtual disk, wherein a first disk platter of said plurality of disk platters has a first disk platter surface associated with the first virtual disk and a second disk platter surface associated with the second virtual disk, wherein a second disk platter of said plurality of disk platters has both its upper surface and its lower surface associated with the first virtual disk, wherein the system receives a first operation comprising at least one of a read or write that is specified to be performed on the first virtual disk by the first actuator assembly and receives a second operation comprising at least one of a read or write that is specified to be performed on the second virtual disk by the second actuator assembly, and wherein at least a portion of the second operation is performed by the second actuator assembly concurrently with the first operation by the first actuator assembly.