公开(公告)号：US10319397B2

公开(公告)日：2019-06-11

申请号：US15971158

申请日：2018-05-04

Applicant: Seagate Technology LLC

Inventor： Scott E. Ryun ,  Brian R. Pollock ,  Ryan Todd Lyle ,  Ryan Thomas Herbison ,  Richard Arthur Herr ,  Paul W. Burnett

IPC: G11B5/725 ,  G11B5/265 ,  G11B5/455 ,  G11B5/60

Abstract: Narrow band dwell occurs when air bearings corresponding to a set of read and/or write heads within a hard disc drive remain within a fixed narrow band of one or more storage platters for an extended period of time. The air bearings displace lubricant on the storage platters and may redeposit the lubricant as droplets on the platters. The presently disclosure technology is directed to monitoring a hard disc drive for narrow band dwell, and in some implementations, implementing operations to mitigate narrow band dwell. More specifically, the presently disclosure technology may detect an overflying air-bearing slider position, apply a lubrication film displacement formula to a narrow band of the storage platter, apply a lubrication film reflow formula to one or more other narrow bands of the storage platter, and track lubrication film thickness over time in each of the narrow bands of the storage platter.

公开(公告)号：US20180336921A1

公开(公告)日：2018-11-22

申请号：US15971158

申请日：2018-05-04

Applicant: Seagate Technology LLC

Inventor： Scott E. Ryun ,  Brian R. Pollock ,  Ryan Todd Lyle ,  Ryan Thomas Herbison ,  Richard Arthur Herr ,  Paul W. Burnett

IPC: G11B5/265 ,  G11B5/725 ,  G11B5/455

CPC classification number: G11B5/2655 ,  G11B5/455 ,  G11B5/725

Abstract: Narrow band dwell occurs when air bearings corresponding to a set of read and/or write heads within a hard disc drive remain within a fixed narrow band of one or more storage platters for an extended period of time. The air bearings displace lubricant on the storage platters and may redeposit the lubricant as droplets on the platters. The presently disclosure technology is directed to monitoring a hard disc drive for narrow band dwell, and in some implementations, implementing operations to mitigate narrow band dwell. More specifically, the presently disclosure technology may detect an overflying air-bearing slider position, apply a lubrication film displacement formula to a narrow band of the storage platter, apply a lubrication film reflow formula to one or more other narrow bands of the storage platter, and track lubrication film thickness over time in each of the narrow bands of the storage platter.