Abstract: A compact storage server is configured with two 2.5-inch form factor disk drives, a solid-state drive, and a processor, all mounted on a support frame that conforms to a 3.5-inch disk drive form factor specification. The 2.5-inch form factor disk drives may be configured as the mass storage devices for the compact storage server, the solid-state drive may be configured to increase performance of the compact storage server, and the processor may be configured to perform object storage server operations, such as responding to requests from clients with respect to storing and retrieving objects.

Abstract: Systems and methods in accordance with embodiments of the present invention can be applied to determine the position of a ramp relative to an actuator. In one embodiment, a system in accordance with the present invention includes a rotatable medium having a first track assigned to a track located a distance from the ramp, rather than a distance from an average acquire track, thereby maximizing the size of a data region. A track density can be reduced for a given hard disk drive capacity, or alternatively the hard disk drive capacity can be maximized for a given track density.

Abstract: A hard disk drive determines whether the hard disk drive is powered by a battery. This determination is used to select an operating RPM value for the hard disk drive. The fly height of a slider on a hard disk drive can be tested at a low operating RPM value. If the fly height is acceptable, the low operating RPM value is enabled to be selectable for the disk drive. In addition to a low operating RPM value, a high operating RPM value can also be selectable.

Abstract: Systems and methods in accordance with embodiments of the present invention can be applied to determine the position of a ramp relative to an actuator. In one embodiment, a system in accordance with the present invention includes a rotatable medium having a first track assigned to a track located a distance from the ramp, rather than a distance from an average acquire track, thereby maximizing the size of a data region. A track density can be reduced for a given hard disk drive capacity, or alternatively the hard disk drive capacity can be maximized for a given track density.

Abstract: A method of determining the write head capacity during self test of a hard disk drive is described. Information related to the dynamic coercivity of the disk service is obtained. In one embodiment, a DC erase condition is produced onto the disk surface. An AC signal is provided to a write head such that a region on the disk surface is put into a state of substantially no direction of magnetization. The AC signal to cause this state will be related to the coercive current. The coercive current can be used to estimate the required write current at low temperatures and thus determine whether to reject the hard disk drive.

Abstract: A method and arrangement for mounting a rotary actuator bearing cartridge between a disk drive base and cover, are disclosed. The mounting arrangement minimizes any possible deformations to bearing sleeve as well as any effects to bearing preload and friction while enabling a top down assembly.