文件名称：Hard Drive Self-tests
文件大小：47KB
文件格式：PDF
更新时间：2019-01-19 11:44:40
DST
介绍硬盘的自检功能。自检功能包含三大部分： 1) an electrical segment wherein the drive tests its own electronics. The particular tests in this segment are vendor specific, but as examples: this segment might include such tests as a buffer RAM test, a read/write circuitry test, and/or a test of the read/write head elements. 2) a seek/servo segment wherein the drive tests it capability to find and servo on data tracks. The particular methodology used in this test is also vendor specific. 3) a read/verify scan segment wherein the drive performs read scanning of some portion of the disk surface. The amount and location of the surface scanned are dependent on the completion time constraint and are vendor specific.