Patent
Dynamic variable capacity hard disk drive
Jonathan Darrel Coker,David Robison Hall +1 more
- 09 Dec 2013
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TL;DR: In this paper, the authors proposed a method for increasing the data capacity of a disk drive from the factory settings for data capacity, which includes determining if the disk drive is in a favorable or stable environment, writing data to at least one portion of the disk disk drive at a higher capacity than the factory setting for the at least 1.5% of the disks, and resetting the capacity for at least 5% of all the disks.
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Abstract: A disk drive includes an environmental monitor, a controller and a writing mechanism. The controller acts in response to an output from the environmental monitor to determine if the data capacity of a disk drive could be increased from a first value to a second value. The controller determines the second increased value. The writing mechanism, controlled by the controller, writes data to the disk to realize the increased data capacity of the disk drive. A method for increasing the data capacity of a disk drive from the factory settings for data capacity includes determining if the disk drive is in a favorable or stable environment, writing data to at least one portion of the disk drive at a higher capacity than the factory setting for the at least one portion of the disk drive, and resetting the capacity for at least one portion of the disk drive.
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Citations
Patent
Adaptive guard band for improved data storage capacity
Aigang Feng,FongKheon Chong,MyintNgwe Maung,SienHuay Chong,James Joseph Touchton,Abhay T. Kataria,Haejung Lee,Taesik Kang +7 more
- 25 Oct 2013
TL;DR: In this paper, an adaptive guard band for a ramp load/unload device is disclosed to provide extended data storage, where the algorithm formats the media to provide a track zero at a first cylinder if the capacity is at or above the threshold capacity, and a second cylinder if capacity is below or at or at a threshold capacity.
11
Patent
Mixed mode hard drive with idle time & expandable i-region / e-region
Jonathan Darrel Coker,David Robison Hall +1 more
- 09 Dec 2013
TL;DR: In this paper, the disk drive includes at least one disk having two major surfaces divided into a plurality of regions, and the host writes to the end/final logical block address to see if a region has more capacity.
8
Patent
System and method of conducting in-place write operations in a shingled magnetic recording (SMR) drive
Ryoji Fukuhisa
- 30 Mar 2015
TL;DR: In this article, the authors describe a system and method that allows random write operations regions utilizing shingled magnetic recording (SVM) to re-write a logical block address (LBA) with new data.
7
Patent
Data write management
Daniel Suhwan Kim,Jae Ik Song,Dong Hyuck Shin +2 more
- 28 Mar 2014
TL;DR: In this article, a write operation is paused and a transducer head is moved from a first position on the target data track to a second position separated from the first position by at least one data track.
5
Patent
Selective shingled magnetic recording scheme
Lothar Pantel
- 02 Feb 2016
TL;DR: In this article, a selective band management scheme for storage devices is disclosed that may be used in connection with shingled magnetic recording (SMR), which uses bands consisting of tracks separated by guard regions.
5
References
Patent
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Tetsuya Uemura,Hideki Saga +1 more
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TL;DR: In this article, the authors propose to increase the capacity of a disk drive by partially overwriting adjacent tracks to shorten the track width and collectively updating a data update unit made up of a plurality of tracks, wherein the capacity reduction caused by a defective track is suppressed.
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Patent
Storage device with shingled data and unshingled cache regions
Jonathan Darrel Coker,David Robison Hall +1 more
- 18 Jul 2011
TL;DR: Shingled magnetic recording (SMR) devices according to the invention include unshingled cache regions that can be used for storage of data as discussed by the authors, which is used in a variety of flexible ways including in an implementation of write-twice caching or for opportunistic temporary storage.
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Patent
Information recording device and information recording method
Akihiko Sato,Tatsuya Haga +1 more
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TL;DR: In this article, an information recording device includes: a magnetic recording medium having tracks; and a recording controller configured to control recording of information on a track provided between a first track group and a second track group adjacent to the first track groups, each of which includes a plurality of adjacent tracks partially overlap each other.
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Patent
Programmable, variable data track pitch
Liikanen Bruce A,Lance R. Carlson +1 more
- 13 Aug 1998
TL;DR: In this article, a disk drive system having a disk used to store information is described, and a method of reading data from a disk is also disclosed, which includes the steps of: (1) providing a plurality of servo tracks, each having a track number; (2) providing an additional set of data tracks each with a data track number, wherein the number of servos tracks within a particular region of a disk are related to the data tracks within the particular region by a ratio defined as a TPI scale factor; (3) obtaining instructions from a host to
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Patent
System, method and apparatus for shingled magnetic recording in disk drives
Kosuke Saito,Kazuaki Usui,Masaharu Kawamura +2 more
- 28 Dec 2011
TL;DR: In this article, the authors proposed a method of targeted corruption of user data in a shingled magnetic recording disk by identifying user data on a Track_N targeted for corruption, identifying a readback centerline of the Track-N, and rewriting the user data of an adjacent track with an offset write centerline to overwrite magnetic material at the readback centrelines of both Track-n and the adjacent track.
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