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The Stacked Volumetric Optical Disc (or SVOD) is an optical disc format developed by Hitachi Maxell, which uses an array of wafer-thin optical discs to allow data storage.
Each "layer" (a thin polycarbonate disc) holds around 9.4 GB[1] of information, and the wafers are stacked in layers of 20, 25, 100, or more, giving a substantially larger overall data capacity; for example, 100× cartridges could hold 940 GB using the system as announced.
Hitachi Maxell announced the creation of the SVOD standard in 2006, intending to launch it the next year. Aimed primarily at commercial users, the target price was ￥40,000 for a cartridge of 100 thin discs, with the potential to expand into the home user market. When they announced the system, Hitachi Maxell publicly recognized the possibility that the system could be eventually modified for use with a blue-violet laser, similar to Blu-ray discs, which could have expanded the capacity of the system to 3-5 TB. It is possible that they in fact developed this "second generation" SVOD for use with standard Blu-ray lasers, with each thin disc having a storage capacity of 25 GB, or a 100-disc cartridge having a storage of 5 TB.[2] Hitachi Maxell developed systems both for burning to the media using standard DVD optical heads, and pre-recording to the media using a special heat imprint technique they called "nanoimprinting." Though nanoimprinting initially required 6 minutes per disc for pressing, they had improved it to 8 seconds, and intended to achieve a comparable throughput to standard DVD pressing.[3] The primary application of the SVOD system seemed to be business data archival, replacing digital tape archives.[4][2]
In 2007, Japanese broadcaster NHK announced a similar system, based on Blu-ray discs, of stacked optical storage media specifically designed to rotate at high speeds, up to 15,000 RPM.[5]
SVOD was anticipated to be a likely be a candidate, along with Holographic Versatile Discs (HVDs), to be a next-generation optical disc standard.[citation needed] However, as of 2021, little has been done with the format.[citation needed]
References
^"New DVD Discs Will Store One Terabyte Data". RealityPod. Retrieved 21 November 2012.
^ abDripchak, Al (19 September 2007). "SVOD: Stacked Volumetric Optical Discs" (PDF). (PDF) from the original on 15 October 2017. Retrieved 8 April 2021.
^Yasushi Uchida (20 April 2006). . Nikkei Technology. Archived from the original on 23 March 2016. Retrieved 8 April 2021.
stacked, volumetric, optical, disc, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, needs, updated, please, help, update, this, article, reflect, recent,. This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article needs to be updated Please help update this article to reflect recent events or newly available information April 2021 This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Stacked Volumetric Optical Disc news newspapers books scholar JSTOR April 2021 Learn how and when to remove this template message The Stacked Volumetric Optical Disc or SVOD is an optical disc format developed by Hitachi Maxell which uses an array of wafer thin optical discs to allow data storage Each layer a thin polycarbonate disc holds around 9 4 GB 1 of information and the wafers are stacked in layers of 20 25 100 or more giving a substantially larger overall data capacity for example 100 cartridges could hold 940 GB using the system as announced Hitachi Maxell announced the creation of the SVOD standard in 2006 intending to launch it the next year Aimed primarily at commercial users the target price was 40 000 for a cartridge of 100 thin discs with the potential to expand into the home user market When they announced the system Hitachi Maxell publicly recognized the possibility that the system could be eventually modified for use with a blue violet laser similar to Blu ray discs which could have expanded the capacity of the system to 3 5 TB It is possible that they in fact developed this second generation SVOD for use with standard Blu ray lasers with each thin disc having a storage capacity of 25 GB or a 100 disc cartridge having a storage of 5 TB 2 Hitachi Maxell developed systems both for burning to the media using standard DVD optical heads and pre recording to the media using a special heat imprint technique they called nanoimprinting Though nanoimprinting initially required 6 minutes per disc for pressing they had improved it to 8 seconds and intended to achieve a comparable throughput to standard DVD pressing 3 The primary application of the SVOD system seemed to be business data archival replacing digital tape archives 4 2 In 2007 Japanese broadcaster NHK announced a similar system based on Blu ray discs of stacked optical storage media specifically designed to rotate at high speeds up to 15 000 RPM 5 SVOD was anticipated to be a likely be a candidate along with Holographic Versatile Discs HVDs to be a next generation optical disc standard citation needed However as of 2021 little has been done with the format citation needed References Edit New DVD Discs Will Store One Terabyte Data RealityPod Retrieved 21 November 2012 a b Dripchak Al 19 September 2007 SVOD Stacked Volumetric Optical Discs PDF Archived PDF from the original on 15 October 2017 Retrieved 8 April 2021 Yasushi Uchida 20 April 2006 Hitachi Maxell Develops New Optical Storage Technology Enabling Approx 1 TB Capacity with 6 5 cm thick Cartridge Nikkei Technology Archived from the original on 23 March 2016 Retrieved 8 April 2021 Hitachi Maxell 1TB SVOD optical disc cart Engadget Retrieved 8 April 2021 Williams Martyn 29 May 2007 NHK Pushes Optical Disc Speed Limit TechHive Retrieved 8 April 2021 External links EditHitachi Maxell develops wafer thin storage disc details and interview from IDG News Service dead link archived 4 October 2006 Maxell details in Japanese language dead link archived 19 April 2006 This computer storage related article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Stacked Volumetric Optical Disc amp oldid 1113008661, wikipedia, wiki, book, books, library,
