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MOSAID Technologies

Conversant (the new name for MOSAID Technologies) is a global intellectual property management company known for its principled approach to patent licensing and its consistent delivery of results to companies with extensive intellectual property holdings. With a portfolio of more than 12,500 patents and patent applications under management, Conversant has special expertise in semiconductors, communications, and automotive technology. The company also develops innovative Flash memory technology for mass storage applications. Founded in 1975, Conversant has offices in Ottawa, Ontario; Plano, Texas; and Luxembourg.

see also:- MOSAID - editor mentions on StorageSearch.com

  • editor's comments:- April 2012 MOSAID Technologies designs SSD SoC / IP technology - which can be used by oems to design SSDs. Their market focus seems to be towards the "fastest" end of the flash SSD spectrum. For example their HyperLink technology could enable SSD oems to design faster upgradable PCIe SSDs
MOSAID mentions in SSD market history

In May 2007 - MOSAID announced its architecture (available for license) could deliver 800M bytes/ second sustained throughput on flash SSDs using today's technology.

In July 2009 - MOSAID published a white paper - Implementing Storage Class Memory with HLNAND (pdf) - which describes how their HyperLink technology can achieve 1GB/s R and W throughput in a terabyte flash array occupying only 60cm2 of motherboard. It also provides the flexibility for the oem to populate the module with more memory after soldering. This tool might be useful for designers of PCIe or InfiniBand class SSD accelerators.

In July 2011 - MOSAID Technologies said it will sample silicon based on its HLNAND2 specification in late 2011. Using a high-speed, point-to-point ring topology, HLNAND2 facilitates SSD development with data transfer rates into the multiple Gigabyte-per-second range.

In comparison, NAND Flash interfaces based on a parallel bus structure are limited to transfer rates of up to 200MB/s, with only a few devices supported on each channel. The company's HLNAND 256Gb Flash memory device is packaged as an MCP composed of a stack of 9 dies - 8 industry-standard NAND Flash chips, and 1 MOSAID proprietary ASIC. The design supports either monolithic 32Gb MLC Toggle Mode or 32Gb MLC legacy asynchronous NAND Flash chips, evenly distributed over 4 banks.

In April 2012 - MOSAID Technologies announced that it is sampling a 16 die NAND flash stack integrated with its HLNAND bridge interface in a single 100-ball BGA measuring 18mm x 14mm - which provides 512GB raw capacity and 667MB/s aggregate simultaneous R/W throughput as a building block for use by SSD oems to build multi-terabyte SSDs with GB/s throughput by adding their own SSD controllers.
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MOSAID resumes the conversation about licensing HLNAND
Editor:- September 23, 2013 - Growing market demands for capacity and performance in the enterprise SSD market - particularly in fast PCIe SSDs - highlights the intrinsic weaknesses in standard flash memory interfaces.

That's the theme of a recent blog - about HyperLink NAND technology and scalability by Peter Gillingham, VP and CTO Conversant (the new name for MOSAID Technologies) who writes - "In the enterprise server space, where PCIe is often used to connect storage hardware, SSDs require as many as 25 to 50 channels to provide the throughput demanded by the system interface... but even 2nd generation flash interfaces such as ONFi and toggle mode are not up to the job."

Editor's comments:- MOSAID - which will legally change its name to Conversant in January 2014 - first started talking about its HLNAND architecture in May 2007. But the company - which recently changed its name - has been licensing its patents in fast memory systems design since the 1990s.

Among the many reasons - why the company says its HLNAND simplifies the design of ultra high bandwidth scalable SSDs (pdf) are the low loading on each device which means that latency is not degraded to the same extent by capacitive bus load as in traditional memory topologies.
the 3 fastest  PCIe SSDs  - click to read article But in this case you'd be wrong. (I didn't say you'd like the answers, though.) ...read the article
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Surviving SSD sudden power loss
Why should you care what happens in an SSD when the power goes down?

This important design feature - which barely rates a mention in most SSD datasheets and press releases - has a strong impact on SSD data integrity and operational reliability.

This article will help you understand why some SSDs which (work perfectly well in one type of application) might fail in others... even when the changes in the operational environment appear to be negligible.
image shows Megabyte's hot air balloon - click to read the article SSD power down architectures and acharacteristics If you thought endurance was the end of the SSD reliability story - think again. ...read the article
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