Results 11 to 20 of about 7,393 (263)

Hard-disk drives [PDF]

open access: yesCommunications of the ACM, 2009
New drive technologies and increased capacities create new categories of failure modes that will influence system designs.
openaire   +1 more source

Performance Analysis of NFS Protocol Usage on VMware ESXi Datastore

open access: yesJuTISI (Jurnal Teknik Informatika dan Sistem Informasi), 2017
Hypervisor virtualization that uses bare metal architecture allows to allocate and provide resources for each created virtual machines. Resources such as: CPU and memory, can be added or upgraded anytime to the host hardware (virtualization server) to be
Billy Susanto Panca
doaj   +1 more source

Modeling and Control of a Dual Stage Actuator Hard Disk Drive

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
A data-based approach is presented for modeling and controller design of a dual-stage servo actuator in a hard disk drive. The servo actuator in this hard disk drive consists of a conventional voice coil motor and a piezo-electrically actuated suspension.
Uwe BOETTCHER   +2 more
doaj   +1 more source

Utilization of CD and DVD Pick-Up Heads for Scratch Inspection of Magnetic Disk in Dynamic State Using Microcontroller

open access: yesApplied Sciences, 2020
A non-destructive technique to inspect a scratch on all magnetic disks in the beginning process of hard disk drive (HDD) manufacturing by using CD and DVD pick-up heads as the detector is proposed.
Achinee Polsawat   +2 more
doaj   +1 more source

Video recorder memory calculation of video surveillance system

open access: yesТехнічна інженерія, 2021
This article analyzes modern video compression formats, presents and substantiates the algorithm for calculating the required volume of the DVR to allow storage of video surveillance systems for the required period, provides a procedure for selecting a ...
O.F. , T.M. , O.V. , V.V. , D.S. , S.M.
doaj   +1 more source

Stable Peak Filtering Method to Reject High Frequency Disturbance in Hard Disk Drives

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2010
In this paper, novel solutions are provided for designing the disturbance filter when there are significant plant dynamics within the bandwidth of the filter.
Fan HONG, Chunling DU
doaj   +1 more source

Head-Positioning Control Using Virtual Resonant Modes in a Hard Disk Drive

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
In conventional control systems in hard disk drives, it is difficult to compensate for disturbances above the primary mechanical resonance. In this paper, a design method that uses a virtual resonant mode in head-positioning systems of hard disk drives ...
Takenori ATSUMI
doaj   +1 more source

Controller Switching Strategy for Constrained Systems and Its Application to Hard Disk Drives

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2007
We propose a switching control strategy for systems with state and control constraints. Prior studies have proven that switching control strategies have the ability to meet performance objectives, such as fast response and good disturbance rejections ...
Atsushi OKUYAMA, Takashi YAMAGUCHI
doaj   +1 more source

Equalization in hard disk drive read channels [PDF]

open access: yes2014 21st International Conference on Telecommunications (ICT), 2014
This paper presents a comprehensive non-exhaustive comparative study of hard disk drive read-channel equalization techniques used in the readback process of magnetically stored information. The main read channel architectures: partial-response maximum likelihood (PRML) and decision feedback equalization (DFE) based systems, are compared in power ...
Nuno Miguel de Figueiredo Garrido   +1 more
openaire   +3 more sources

Polymer-based dampening layer application to improve the operating shock tolerance of hard disk drive

open access: yesJournal of Engineering and Applied Science, 2022
This paper discusses a passive vibration control method to improve the shock tolerance of hard disk drives (HDDs) in operating condition (op-shock tolerance).
Djati Wibowo Djamari   +3 more
doaj   +1 more source

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