Abstract: An adapter for converting an interface of a data storage device is provided. The adapter has a first interface for connection to the interface of the data storage device and a second interface for connection to one or more host systems. The adapter includes a processor for converting commands and data between the first and second interfaces. The adapter transforms the data storage device to emulate physically and logically a higher availability and higher performance native data storage device. The adapter has a first connector compatible with the first interface for attachment to the data storage device and a second connector compatible with the second interface for attachment to the one or more host systems. The first and second connectors are disposed in the adapter in a back to back arrangement. The adapter logically separates commands for the data storage device from commands for the adapter.

Abstract: A disk for calibrating glide heads utilizes a dual-zone configuration of multiple laser melt bumps having selected heights. Averaging the PZT response over many bumps significantly narrows the response distribution, resulting in greater certainty and correlation of the PZT amplitude to bump height. The multiple calibration bumps are circumferentially arranged on a disk surface at a selected radius in a ring-like manner. A second head cleaning zone is provided near the inner diameter of the disk to provide for increased reproducibility of the PZT calibration response. The second zone is densely textured and serves to clean the glide head prior to its use in the calibration zone.