Endurance

Do You Know How Wear-Leveling Extends Flash Lifetime?

Embedded devices are used for many different purposes, in many different industries, and the expectations for lifetime range vastly between them. Small consumer products, such as wrist-mounted fitness monitors have lifetimes of only a few years as new versions will take their place shortly, whereas embedded devices in cars and energy meters may be expected to last upwards of 30 years. NAND flash wears out over time and will eventually fail. How can you extend the life of your NAND-based devices?

Mars Rover Flash Challenges

The Mars Opportunity Rover was in the news again this week, as NASA mission engineers try to overcome what they refer to as an increasingly troubling bout of rover "amnesia". In September of 2014, the team reformatted the flash memory.

Flash Friendly File Systems

Earlier this year I had an opportunity to speak at Embedded World 2014 on the topic of Flash Friendly File Systems. Flash media is growing by leaps and bounds, and the chosen file system is a key component. For this paper, I drew on both my own development and support experience at Datalight and the experience of our staf

Study: Impact of File Systems on Solid State Storage Life Expectancy

In 1965, Gordon Moore predicted that transistor density would double every two years or so. For the most part, this observation has held true for 50 years and has become well known as "Moore's Law." This characteristic is a fundamental driving force behind the technological advances which have led to computers continually becoming faster, smaller, cheaper, and more reliable. Almost every aspect of technology has benefited from this characteristic - almost. Solid state memory is one area where there is a major dichotomy. Moore's Law has resulted in smaller and cheaper storage, yet the driving need for more storage capacity has driven manufacturers to sacrifice reliability and in some cases performance.

The purpose for this paper is to discuss the characteristics of solid state memory, specifically as they relate to media life (endurance) and performance. It will show how alternative file systems and file system configurations can significantly improve both media life and performance…


FlashFX Tera Feature Highlight: The Error Policy Manager

Datalight's FlashFX Tera is quite similar in structure to its predecessor, FlashFX Pro, but there have been some features that have evolved from our experience in working with NAND flash over the years that are reflected in some of the new features you will now find in our FlashFX Tera product, and the Error Policy Manager is one of them.

eMMC TRIM new to Android?

An August 1st blog post on Tom's Hardware reports that the new Android 4.3 NOW has support for the eMMC TRIM command. How odd that the Android OS that's on 80% of smart phones sold last quarter does not support eMMC TRIM for old deleted data, a feature which has been in the JEDEC specification since version 4.4 which was released in March of 2009.

SD Reliability - Best Practices

In an earlier blog post titled "Managed NAND Performance: It's All About Use Case," we referred to an article measuring SD media, specifically sequential write performance. Speed was measured using a camera to shoot continuous pictures. Photographers and other users of SD media have another concern - reliability.

Are There Problems with eMMC?

If you've been following this blog, you've probably noticed a lot of discussion and analysis around eMMC. We've written about the reasons we are so excited about eMMC, but also why the Write Amplification issues caused by eMMC parts are a problem that needs more attention by the industry.

Device Longevity using Software

At Datalight, we often think about device longevity, which is why our products extend the lifetime of NAND flash media, while improving performance.

Breaking Through the Sub-20nm NAND Flash Barrier

That cracking you may or may not have heard last month was the sound of SanDisk and Toshiba breaking the sub-20 nanometer NAND barrier. Flying in the face of conventional wisdom (and more than a few industry analysts), both companies recently announced they will be delivering 19nm NAND this year.

Digital Payments: Less NAND Flash Corruption

We recently had the opportunity to work with Digital Payment to solve a NAND flash corruption issue by using the validation tools that come standard in FlashFX Pro. You've probably seen their shiny parking meters around town, including many remote locations that have no permanent power and no easy access to service. That's why when Digital Payment learned of the reliability benefits of Reliance, they saw an opportunity to improve up-time and lower service costs. Reliability is just one of many reasons their parking meters are popular with parking lot owners and municipalities looking for dependable, user-friendly machines. Be sure to check out the full case study for more information about Digital Payment's experience with FlashFX Pro and…


5 Problems Impeding Flash Adoption

It's been over 20 years since NAND flash was supposed to take over the world, so why is the 'ultra-portable' laptop I'm writing this on still using HDD? And why, nearly 30 years after the invention of flash, are we still debating its applications vs. the rotating platter?

Durability: The Next Killer App

For the first time in more than a decade, people are saving again. In 2007 and years prior, the savings rate hovered around zero as we maxed our credit cards and lines of credit, driving the savings rate into the red and giving the world's manufacturing base an almost unbelievable boom. In January 2009 though, something unexpected happened; the US savings rate suddenly moved above 5%, the highest in decades.

Flash Wear leveling

Contrary to popular belief, flash memory does not last forever. Every flash part in existence comes with a finite number of write and erase cycles before the data stored becomes corrupted and the flash part unusable. Most flash file systems on the market today include a basic type of wear leveling, but all wear leveling algorithms are not created equal.

NAND or NOR Flash Memory: Tradeoffs & Strategies

Consumer electronics and embedded software devices are using larger amounts of flash memory for nonvolatile storage than ever before. So what kind of flash memory should you use? The choice between using NAND and NOR Flash may not be a simple one for the complex embedded devices being developed today.