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SanDisk Introduces Extreme FFS, Promises Faster Solid State Drives Next Year

malware

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#1
SanDisk Corporation today unveiled an advanced flash file system for solid-state drives (SSDs) that yields dramatic improvement in performance and reliability for computing applications. Called ExtremeFFS, this next-generation patented flash management system – which has the potential to accelerate random write speeds by up to 100 times over existing systems – will ship in SanDisk products during 2009. Speaking in Los Angeles at WinHEC 2008, Rich Heye, senior vice president and general manager for SanDisk’s Solid-State Drive (SSD) Business Unit, presented ExtremeFFS along with two metrics – vRPM and LDE – that can help end-users evaluate SSDs. vRPM enables comparisons in performance between an SSD and a hard disk drive (HDD) or another SSD, and LDE calculates the lifespan of a solid-state drive.


ExtremeFFS
For SSDs to perform optimally in Windows Vista, and thus replicate or surpass the functionality of hard disk drives, a new flash management technology is needed to accelerate SSD write speed and endurance, he said. “SSDs will revolutionize client storage, but we need new benchmarks that allow them to be treated differently than HDDs.”

In 1994 SanDisk introduced TrueFFS, which has been the leading flash file system for major mobile handset vendors. TrueFFS was incorporated into one previous version of Windows, as the PCMCIA FTL of choice for its performance, scalability and low overhead. When using an SSD under Windows Vista, the demands on the SSD require a large quantity of random writes, as opposed to sequential access. “The mismatch to block size is significant,” said Heye.

Enter Extreme FFS
To maximize random write performance, SanDisk developed the ExtremeFFS flash file management system. This operates on a page-based algorithm, which means there is no fixed coupling between physical and logical location. When a sector of data is written, the SSD puts it where it is most convenient and efficient. The result is an improvement in random write performance – by up to 100 times – as well as in overall endurance.

ExtremeFFS incorporates a fully non-blocking architecture in which all of the NAND channels can behave independently, with some reading while others are writing and garbage collecting. Another key element of ExtremeFFS is usage-based content localization, which allows the advanced flash management system to “learn” user patterns and over time localize data to maximize the product’s performance and endurance. “This feature might not show up in benchmarks, but we believe it is the right thing to do for end-users,” Heye said.

New Performance and Endurance Metrics Proposed
Since hard drive performance is measured in RPMs (revolutions per minute), SSDs need a simple performance metric for comparisons, he said. virtual RPM (vRPM) accurately and easily allows consumers to compare SSDs to HDDs and to each other when used in PCs, said Heye. “vRPM answers the question: How fast would you have to spin a virtual HDD to achieve the level of performance seen by an SSD in a client PC?” Heye predicted that SSD net performance next year will be four times faster than the current generation of SSDs and nearly six times that of the latest 2.5-inch HDDs.

Commenting on vRPM, Joseph Unsworth, research director at Gartner, said: "There has been a deluge of SSD products with varying levels of quality that have created undeserved hype and confusion for consumers and corporations. Industry support behind a common metric that clearly articulates the value proposition of an SSD on a like for like basis to a HDD will be instrumental in driving end-user understanding and subsequent adoption as prices continue to fall.”

Apart from vRPM, SanDisk is proposing Long-Term Data Endurance (LDE), which simplifies endurance as a useful number, as the first industry metric of long-term data endurance. “This is a lot like measuring tread wear on a tire,” said Heye. Major PC OEMs and SSD competitors have reviewed and commented on SanDisk’s initial proposal, he added, and SanDisk has submitted a proposal and white paper to JEDEC, the leading developer of standards for the solid-state industry.

LDE represents the total amount of data writes allowed in the lifespan of an SSD. SanDisk will spec LDE on its future PC SSD products and “we strongly encourage others to follow SanDisk’s lead,” he added.

Regarding LDE’s impact on SSD adoption, Greg Wong of Forward Insights said: "LDE allows OEMs a simple way to compare SSDs and determine, based on the applications usage patterns, which drives are suitable for a particular application. The beauty of LDE," he added, "is that it captures endurance in one single, understandable figure. A common metric is necessary to facilitate SSD adoption moving forward."

(Note: The LDE proposal and white paper, along with a backgrounder on vRPM, is available on the SanDisk website at http://www.sandisk.com/SSD/Tech_and_metrics).

Source: SanDisk
 
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#2
What a name choice! :laugh:
:roll: The SanDisk Extreme For F**k Sake :roll:
 
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#3
thats some persuasive marketing right there
 

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#4
Enter Extreme FFS! :laugh:
 
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#5
Acronyms are stupid!!!!

In 1994 SanDisk introduced TrueFFS, which has been the leading flash file system for major mobile handset vendors.
True FFS....
 

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#6
"are you on an IDE drive?"
"no, its SSD FFS!"


jokes aside, i'm glad these guys are taking it seriously. a new file system, performance ratings... i'm glad someones doing this, as we needed it pretty badly.