Abstract: A manufacturing system for a data storage device including a non-networked manufacturing device configured to write manufacturing data into a data storage device reliability log in a memory of a data storage device, and a networked manufacturing device configured to read the manufacturing data from the data storage device reliability log in the memory of the data storage device.
Abstract: An example device includes a memory device and one or more processors. The memory device is configured to store a table that includes two or more mappings, each mapping being associated with a respective logical address and a respective physical address. The processors are configured to identify, within the table, a first zone and a second zone. Each zone includes one or more mappings of the table. The zones do not share any mapping of the table. The processors are further configured to form a first log list indicating one or more mapping updates associated with the mapping(s) included in the first zone, to form a second log list indicating one or more mapping updates associated with the mapping(s) included in the second zone, and to replay a portion of the first log list and a portion of the second log list concurrently to update the table.
Type:
Grant
Filed:
May 5, 2016
Date of Patent:
April 10, 2018
Assignee:
Western Digital Technology, Inc.
Inventors:
Jing Shi Booth, Jerry Lo, Subhash Balakrishna Pillai
Abstract: A computer-implemented method of limiting access time to a computer network for client computing devices may comprise disposing an access controlling device such as router between the computer network and the client computing devices such that the client computing devices can only access the network through the access controlling device, at least while within an area of coverage thereof. A unique identifier may be stored for client computing devices whose access to the network is to be limited and a selectable allowable cumulative network access time period may be stored for at least some of these client computing devices. Using at least the unique identifiers, the cumulative network usage time may be tracked for each of the client computing devices. The access controlling device may then prevent further network access to those client computing devices whose tracked cumulative network usage time exceeds the selectable allowable cumulative network access time period.
Abstract: A disk drive to reduce head instability during disk drive manufacturing is disclosed. The disk drive comprises: a disk; a dynamic flying height (DFH) read/write head; a flying height actuator to control the spacing between the DFH read/write head and the disk; and a controller. The controller controls operations in the disk drive including applying a sloped increasing power between a first voltage and a second voltage to move the DFH read/write head towards the disk.
Type:
Grant
Filed:
June 17, 2009
Date of Patent:
July 5, 2011
Assignee:
Western Digital Technology, Inc.
Inventors:
Jianfeng Xu, Soo-Choon Kang, Kazuhiro Saito, Hongchao Tim Zhao