公开(公告)号：US09785377B2

公开(公告)日：2017-10-10

申请号：US14533891

申请日：2014-11-05

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Junghwan Shin ,  Suhwan Kim ,  Dong Hyuck Shin

IPC: G06F12/00 ,  G06F3/06

CPC classification number: G06F3/0653 ,  G06F3/0604 ,  G06F3/0674

Abstract: Methods, apparatuses, systems, and devices are described for determining use of areas of a disk drive. In one method, a score of an area node of the disk drive may be increased each time the area node is accessed during a time interval of a series of time intervals. When each time interval elapses, each existing score of the area nodes (e.g., scores of area nodes that have non-zero scores) may be decreased. Further, after being decreased, each existing score may be saved. In such a manner, a time series analysis of data accesses may be implemented. The increases in score may account for the number of accesses during a given interval, and the decreases in score may account for time passage (e.g., time-weighting the scores). Thus, more frequent accesses and more recent accesses result in higher accumulated scores for the corresponding area nodes.