Friday, October 09, 2015
Submit your own News for
inclusion in our Site.
Click here...
Breaking News
ITC Says Samsung Did Not infringe Nvidia's Patents
Firefox To Switch Away From Plugins
ARCHOS and Sikur Ensure Your Privacy with GranitePhone
Apple Removes Apps From Online Store
PC Shipments Kept Falling In 3Q
Apple Says Battery Tests For iPhone 6s Lineup May Be Misleading
Qualcomm Showcases 24-core Server Chip
AT&T Customers Allowed To Make Calls Over Wi-Fi
Active Discussions
How to back up a PS2 DL game
Copy a protected DVD?
roxio issues with xp pro
How to burn a backup copy of The Frozen Throne
Help make DVDInfoPro better with dvdinfomantis!!!
Copied dvd's say blank in computer only
menu making
Optiarc AD-7260S review
 Home > News > PC Parts > Sandisk...
Last 7 Days News : SU MO TU WE TH FR SA All News

Thursday, November 06, 2008
Sandisk Introduces ExtremeFFS File System For SSDs

SanDisk today unveiled the "ExtremeFFS", a flash file system for solid-state drives (SSDs) that yields improvement in performance and reliability for computing applications.

SanDisk claims that the ExtremeFFS has the potential to accelerate random write speeds by up to 100 times over existing systems. It 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. Obviously the new tools are Sandisk's answers to the various reports indicating the performance derradation of the SSD disks after using them for sime time.

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 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.

The ExtremeFFS flash file management system 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, according to Sandisk.

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.

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.

The LDE proposal and white paper, along with a backgrounder on vRPM, is available on the SanDisk website at

Sony Ericsson Announces New W705 Walkman phone and Wireless Home Audio System MBS-900        All News        Shuttle Announces HD-compatible AMD-based Mini-PC System
Toshiba Introduces First Laptops With Three NVIDIA GPUs     PC Parts News      Shuttle Announces HD-compatible AMD-based Mini-PC System

Get RSS feed Easy Print E-Mail this Message

Related News
Lite-On Introduces New EP2 SSD With NVMe Protocol
SanDisk Introduces New Flash Storage Solutions for the Rapidly Expanding 'Industrial Internet of Things' Market
New Firmware For Intel 750 Series SSD MAkes Your PC Booy Up Faster
Intel Says New DC P3608 IS The Most Powerful Data Center SSD
New Samsung 950 PRO SSD Reads At 2500MBps
Toshiba Exec Sees 128TB SSDs in 2018
SanDisk Releases New SATA SSD CloudSpeed Ultra Gen II SSD
Samsung Rolls Out Line-up of V-NAND SSDs For Data Centers
Seagate Expands Flash Portfolio With New Nytro Flash Products
Toshiba Unveils Three NVME Solid State Drive Families
Lite-On Debuts New NVMe M.2 PCIe SSD
SanDisk and SK Hynix Expanded IP and Commercial Relationship

Most Popular News
Home | News | All News | Reviews | Articles | Guides | Download | Expert Area | Forum | Site Info
Site best viewed at 1024x768+ - CDRINFO.COM 1998-2015 - All rights reserved -
Privacy policy - Contact Us .