Future Options for HDD Storage

Shiroishi, Y.; Fukuda, K.; Tagawa, I.; Iwasaki, H.; Takenoiri, S.; Tanaka, Hisatoshi; Mutoh, Hiroshi; Yoshikawa, Nobuo

doi:10.1109/tmag.2009.2024879

Cited by 307 publications

(152 citation statements)

References 24 publications

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“…Because of the random distributed recording grain, and the grains with random size and shape in TDMR, the bit error rate will be very high [1,3] . To decrease this media error and ISI error, a high code rate 2-D channel coding needs to be used [1] . In conventional method, even the high code rate error correcting code is used for the TDMR channel, the bit error rate is still very high.…”

Section: ⅲ Signal Processing and Parallel Writing Methodsmentioning

confidence: 99%

“…Bit patterned magnetic recording (BPMR) [2], heat assisted magnetic recording (HAMR), two-dimensional magnetic recording (TDMR) and microwave assisted magnetic recording (MAMR) are treated as the next generation magnetic recording technologies to achieve more than 1 Tb/in 2 . Moreover, in theory, TDMR can even achieve 10Tb/in 2 [1,3] . TDMR combines two important technologies:…”

Section: ⅰ Introductionmentioning

confidence: 99%

“…A new recording method is necessary to break through rhis limitation [1] . Bit patterned magnetic recording (BPMR) [2], heat assisted magnetic recording (HAMR), two-dimensional magnetic recording (TDMR) and microwave assisted magnetic recording (MAMR) are treated as the next generation magnetic recording technologies to achieve more than 1 Tb/in 2 .…”

Section: ⅰ Introductionmentioning

confidence: 99%

“…For SWR, a wide write-pole is used, making heavily overlapped tracks. For this reason, the resulting tracks are much narrower than the original written width [1] . Only one corner of the write-head is important [3] .…”

Section: ⅰ Introductionmentioning

confidence: 99%

“…Because of these two factors, high field levels can be maintained [1] . TDMR proposes to use revolutionary 2-D codes and detectors to retrieve the data in this low-SNR environment.…”

Section: ⅰ Introductionmentioning

confidence: 99%

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Parallel Writing and Detection for Two Dimensional Magnetic Recording Channel

Zhang¹,

Lee

2012

The Journal of Korean Institute of Communications and Informati

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BSTRACTTwo-dimensional magnetic recording (TDMR) is treated as the next generation magnetic recording method, but because of its high channel bit error rate, it is difficult to use in practices. In this paper, we introduce a new writing method that can decrease the nonlinear media error effectively, and it can also achieve 10 Tb/in 2 of user bit density on a magnetic recording medium with 20 Teragrains/in 2 .

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Section: ⅲ Signal Processing and Parallel Writing Methodsmentioning

confidence: 99%

Section: ⅰ Introductionmentioning

confidence: 99%

Section: ⅰ Introductionmentioning

confidence: 99%

Section: ⅰ Introductionmentioning

confidence: 99%

“…Because of these two factors, high field levels can be maintained [1] . TDMR proposes to use revolutionary 2-D codes and detectors to retrieve the data in this low-SNR environment.…”

Section: ⅰ Introductionmentioning

confidence: 99%

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Parallel Writing and Detection for Two Dimensional Magnetic Recording Channel

Zhang¹,

Lee

2012

The Journal of Korean Institute of Communications and Informati

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Nanostructured Magnetic Thin Films and Coatings

Rasic

2016

Advanced Nano Deposition Methods

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Probe‐Based Mechanical Data Storage on Polymers Made by Inverse Vulcanization

Mann,

Tonkin,

Sharma

et al. 2024

Advanced Science

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Big data and artificial intelligence are driving increasing demand for high‐density data storage. Probe‐based data storage, such as mechanical storage using an atomic force microscope tip, is a potential solution with storage densities exceeding hard disks. However, the storage medium must be modifiable on the nanoscale. While polymers are promising storage media, they face challenges with synthesis, erasing temperatures, and stability. Here, a low‐cost and robust polymer system is reported that allows repeated writing, reading and erasing. The polymer is made by inverse vulcanization, providing a network of S─S bonds that can be broken and re‐formed repeatedly. This property is leveraged in mechanical indentation to encode information, and thermal S─S metathesis and polymer re‐flow to erase. Exquisite control of indentation depth is possible over 1–30 nm. This control enables data encoding not just as a function of the presence or absence of an indent, but also indentation depth. This ternary coding increases the data density four‐fold over binary coding. Furthermore, the coding can be done at room temperature which is rare for mechanical information storage. The low cost, ease of synthesis, and dynamic S─S bonds in these polymers are a promising advance in polymer storage media for probe‐based data storage.

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Future Options for HDD Storage

Cited by 307 publications

References 24 publications

Parallel Writing and Detection for Two Dimensional Magnetic Recording Channel

Parallel Writing and Detection for Two Dimensional Magnetic Recording Channel

Nanostructured Magnetic Thin Films and Coatings

Probe‐Based Mechanical Data Storage on Polymers Made by Inverse Vulcanization

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