The Revolution of Tape

Since 1952, the evolution of tape storage has been well documented and is perceived as relatively predictable well into the future. But what if tape is actually on the verge of a revolution, thanks to AI and a popular enabler, S3. If so, it will take more than AI and S3 to bring on the Tape Revolution. Advancement in tape automation, originally designed for hyperscalers, is proving attractive to traditional tape lovers and ex-lovers alike. Learn how IBM is removing customer pain points while improving data rate and density in order to expand and re-launch tape into data centers around the world.

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Understanding the Present and Potential of Area Density Capability for HAMR

In conventional perpendicular magnetic recording, magnetic grains of medium only have two saturated magnetization states along its magnetic easy axis. The resulting binary noise at recorded transitions yields the medium SNR to linearly depending on the number of grains across the data track width. In HAMR, this understanding is altered. The FePt-L10 grains can have domains trapped inside during a recording process, yields grains at transition centers to have zero or close-to-zero magnetic moments. The fractionally magnetized grains significantly reduce the binary noise, effectively enhancing the number of the grains across a recording track. This mechanism is responsible for the relatively high track density achieved today in HAMR.
Recent thermal erasure noise experimental measurements have confirmed the predicted existence of zero moment grains in current FePt-L10 HAMR media as well as the corresponding reduction of medium noise power. The zero moment state of the grains potentially gives rise to one additional state to the other two saturated state. This give rise to a possibility of 3-level recording in which the area recording density can be increased by 50% without any reduction of either track width or bit length. The talk will focus on the challenges in recording processes and potential schemes needed to enable the 3-level recording.

大容量化がすすむHDD技術

データ駆動型社会の要求に応えるべくハードディスクドライブ(HDD)はこれまで継続的な容量拡大を実現しており、将来に渡ってもこの容量拡大を継続することが期待されている。 本講演では既に実現しつつある20〜30TBのHDD技術から、30〜40TB、50TB超に向けたSMR、MAMR、HAMR、多数枚実装等、種々の技術アプローチと東芝HDD製品の大容量化に向けた取組について紹介する。

Hard Disk Drive Innovations in The Era of Cloud Storage

In the last two decades, cloud centers have revolutionized our data storage methods, significantly accelerating data growth and ushering us into the zettabyte era. This revolution has also spurred new opportunities for HDD innovations to address the vast demand for cloud data storage.
With a focus on adapting to this cloud transformation, our industry has advanced innovative solutions specifically optimized to meet cloud storage needs. These include the development of Helium-filled drives, Ultra-Shingled Magnetic Recording (Ultra-SMR), and an advanced mechanical platform capable of scaling up to 1MTPI. These innovations are not merely incremental improvements; they represent significant shifts within the HDD industry, establishing new benchmarks in data storage capabilities.
As the pace of recording density increase is challenged by the thermal stability trilemma, these innovations have emerged as pivotal enablers in the lead-up to the transition to Heat-Assisted Magnetic Recording (HAMR) technology. They have been crucial for the industry to keep pace with the rapidly expanding storage requirements of the cloud.
With the introduction of these technologies and the onset of HAMR, our industry's technology roadmap has been significantly enhanced, positioning us to effectively accommodate the expected surge in cloud data volume, which is anticipated to be further accelerated by advancements in Artificial Intelligence.

次世代磁気記録メディアの開発方針

世の中のデータストレージのニーズはより強くなっていっており、この要求を満たすべくハードディスクの大容量化が求められている。 そのためには記録密度の持続的な向上が必要不可欠であり、達成するためには磁気記録メディアの微細構造の設計が非常に重要となる。 本講演では次世代メディア開発の進展や課題、今後の展望について紹介する。

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