Explaining Hard Drive Technologies: SMR, HAMR, ePMR & more!

Technologies for higher-capacity hard drives explained, including CMR vs SMR, as well as the EAMR variants HAMR, ePMR and MAMR. If you enjoy this video, you may also like the ExplainingComputers episodes: Storage Media Life Expectancy: https://www.youtube.com/watch?v=xA9Xq7hb6Q0 Explaining SSDs: Form-Factors, Interfaces & Technologies: https://www.youtube.com/watch?v=EXLfErPEYiw Explaining SSDs: The Price/Performane Trade-off: https://www.youtube.com/watch?v=F8k_XIEhKWo 16TB Toshiba HDD Upgrade: https://www.youtube.com/watch?v=9Zq6e5og4Bc USEFUL/INTERESTING LINKS: Western Digital Tech Brief on hard drive recording technologies: https://documents.westerndigital.com/content/dam/doc-library/en_us/assets/public/western-digital/collateral/tech-brief/tech-brief-recording-technologies.pdf Western Digital launches highest capacity ePMR drives: https://www.westerndigital.com/company/newsroom/press-releases/2024/2024-10-15-western-digital-delivers-worlds-highest-capacity-epmr-hdds Seagate paper on superlattice platinum-alloy media: https://www.seagate.com/gb/en/innovation/mozaic/superlattice-platinum-alloy-media/ Seagate page on areal density innovations, including HAMR: https://www.seagate.com/gb/en/innovation/areal-density/ Seagate launches 36TB HAMR drives: https://www.seagate.com/gb/en/news/news-archive/seagate-introduces-hard-drive-capacities-of-up-to-36tb-extending-its-hamr-based-mozaic-3-technology-platform-pr/ Toshiba demonstates MAS-MAMR: https://www.global.toshiba/ww/technology/corporate/rdc/rd/topics/21/2112-03.html Toshiba announces 26 and 28TB MAMR drives: https://toshiba.semicon-storage.com/eu/company/news/2024/09/storage-20240909-11.html Toshiba developing HAMR drives: https://toshiba.semicon-storage.com/ap-en/company/news/news-topics/2024/05/storage-20240514-1.html More videos on computing and related topics can be found at: http://www.youtube.com/@ExplainingComputers And more videos on film and other making, plus retro tech, are on my Christopher Barnatt channel here: http://www.youtube.com/@ChristopherBarnatt Chapters: 00:00 Titles & Intro 00:49 Platters & Areal Density 04:12 CMR & SMR 07:25 Recording Technologies 10:41 eMPR 12:13 HAMR 14:14 MAMR 15:38 Wrap #HDD #SMR #HAMR #CMR #EMPR #MAMR #Arealdensity #ExplainingComputers