Abstract: Two servers implemented as containerized applications may manage the storage of data and the access of that data by compute jobs in a distributed system. A metadata server may distribute data on ingress and assign files to particular storage volumes. The metadata server may then provide a lookup function for files and be configured to distribute a file to other volumes when necessary. A job server may launch jobs as containerized applications and coordinate data access across jobs.

Abstract: Two servers implemented as containerized applications may manage the storage of data and the access of that data by compute jobs in a distributed system. A metadata server may distribute data on ingress and assign files to particular storage volumes. The metadata server may then provide a lookup function for files and be configured to distribute a file to other volumes when necessary. A job server may launch jobs as containerized applications and coordinate data access across jobs.

Abstract: Two servers implemented as containerized applications may manage the storage of data and the access of that data by compute jobs in a distributed system. A metadata server may distribute data on ingress and assign files to particular storage volumes. The metadata server may then provide a lookup function for files and be configured to distribute a file to other volumes when necessary. A job server may launch jobs as containerized applications and coordinate data access across jobs.

Abstract: Two servers implemented as containerized applications may manage the storage of data and the access of that data by compute jobs in a distributed system. A metadata server may distribute data on ingress and assign files to particular storage volumes. The metadata server may then provide a lookup function for files and be configured to distribute a file to other volumes when necessary.

Abstract: In general, techniques are described for monitoring health of a head in a magnetic data storage drive. A health controller may be configured to receive multi-variate sensor signals indicative of a respective reference value at least one head parameter, wherein the respective reference value is based in part on at least one initial measurement of parameters of the head obtained at a first time, determine a respective predicted current value based at least in part on a respective fixed-drift model and the multi-variate sensor signals, determine a respective actual current value that is based at least in part on at least one current measurement of the head obtained at a second time later than the first time, determine a health status for the head, and store the health status in memory.

Abstract: In general, techniques are described for monitoring health of a head in a magnetic data storage drive. A health controller may be configured to receive multi-variate sensor signals indicative of a respective reference value at least one head parameter, wherein the respective reference value is based in part on at least one initial measurement of parameters of the head obtained at a first time, determine a respective predicted current value based at least in part on a respective fixed-drift model and the multi-variate sensor signals, determine a respective actual current value that is based at least in part on at least one current measurement of the head obtained at a second time later than the first time, determine a health status for the head, and store the health status in memory.

Abstract: A method, apparatus, and system for implementing calibration of cooling sensitivity of embedded contact sensor (ECS) using thermal fly-height control (TFC) actuations, by subtracting the linear part (TFC heat) from the total measured ECS signal, a profile is provided that is sensitive only to the clearance of the head-disk interface due to cooling effect for hard disk drives.

Abstract: Embodiments of the present invention generally relate to a method for obtaining head/disk clearance based on ECS signal. The ECS is calibrated by applying different interface voltages to cause changes in the head/disk clearance, the ECS signal at each interface voltage is obtained, and the relationship between the change in head/disk clearance and the ECS signal is calculated. From this relationship, the head/disk clearance may be obtained based on ECS signal.

Abstract: Approaches for a flying height control scheme in a hard-disk drive (HDD) device. The flying height control scheme utilizes an embedded contact sensor (ECS) to characterize the topography of a magnetic-recording disk at various flying heights of a head slider over a corresponding disk. A relation between a particular flying height and a corresponding ECS value which characterizes the media topography at that particular flying height is represented in disk topography data. The disk topography data is accessed and used for active flying height control for the head-disk interface in view of the current ECS value.

Abstract: Approaches for an interface voltage control (IVC) system in a hard-disk drive (HDD), whereby the IVC operating point determination scheme utilizes non-contact spacing signals for calibration of IVC. While applying a series of input voltages to a slider, head-disk spacing signals are monitored, such as spacing signals from an embedded contact sensor or Wallace spacing loss spacing signals. Based on the relation between the spacing signal values and the series of input voltages, the IVC operating point is identified and stored within the HDD. The IVC operating point corresponds to the IVC input voltage necessary to neutralize the natural slider-disk voltage potential that would otherwise cause an electrostatic force that pulls the slider closer to the disk and can cause lubrication transfer from disk to slider.

Abstract: Approaches for a flying height control scheme in a hard-disk drive (HDD) device. The flying height control scheme utilizes an embedded contact sensor (ECS) to characterize the topography of a magnetic-recording disk at various flying heights of a head slider over a corresponding disk. A relation between a particular flying height and a corresponding ECS value which characterizes the media topography at that particular flying height is represented in disk topography data. The disk topography data is accessed and used for active flying height control for the head-disk interface in view of the current ECS value.