|If they survive manufacturing|
survive customers too.
fast purge / secure erase
is Industrial Grade eMMC? - blog by
sudden power loss
care IP in flash SSDs
Efficiency - making the
same SSD - with less chips
SSD endurance myths
and legends - the saga continues in 3D
companies design industrial SSDs including:-|
|For more industrial SSD vendors look here:-
|"People look at retail
ads for microSD cards and see a 4GB card for ~$5, whereas an industrial grade
part is many times that amount. |
"Many, younger designers (and
older ones too) think you are trying to pull a fast one on them because the
parts look identical and function in the same socket."
in reply to a question about SSD education - and the differences between SLC
and MLC for embedded industrial projects - (April 8, 2014)|
|the long term future for
|Editor:- March 17, 2014 - Trying to make sense
of the changing patterns of memory usage in SSDs and guessing which way
things are likely to go - is something which all SSD designers and specifiers
think about. |
But because of the unusually long timescales for
compatible product availability in the embedded industrial markets - which
start at 7 years typical in-service life - added to the extended temperature
operating range (compared to other markets) means that the the game of "guess
what flash memory will still be availabile roadmap" is different in
I was fortunate to get a personal view on the long term SLC
and MLC questions - as they relate to the
- from one of the most experienced people in this industry - Dave Merry -
whose SSD career (as VP of Engineering, CTO or cofounder) has spanned some of
SSD history's best known industrial SSD companies - SiliconTech (which later
became SimpleTech and then
Modular and SiliconSystems.
It was in a recent conversation with Dave at his present company -
FMJ Storage that I got to
ask these questions.
Zsolt - How long do you
think will SLC continue to be available?
Micron has said it will
continue to provide SLC for some government projects for 15 to 20 years.
- I didn't know that.
Zsolt - Wer're seeing a
lot of complicated
controller technologies being used to make MLC usable and improve
How do you see MLC going?
Dave - We have to keep abreast of all
technologies - and have had early access to 3D-nand. Our characterization
suggests that the endurance of 3D nand is 3x to 4x better than
MLC (at similar line widths). So that makes 3D a good place to look at for a
long term MLC industrial roadmap. But it's too early to know if the 3D layout
and architecture itself might have its own (currently unknown) new failure
mechanisms or R/W disturbance sensitivities - which would require new firmware
Editor's comments:- Our conversation about the SSD
market lasted 2 hours. I'll be writing more about it in another article.
|new report on embedded
flash drives market
|Editor:- February 20, 2013 - Web-Feet Research
expects revenue in the embedded flash drive market to reach $15 billion
in 2017 - "driven heavily by mobile handsets, tablets, portable media
players, digital camcorders, GPS, digital radio along with the adoption of
flash cache in notebook and desktop PCs." |
In this context EFDs
and cards are defined as sub-systems of solid state storage ranked below SSD.
The company recently published a new report
Drives, eMMC and emNAND: 2010-2017 (134 pages, $5.5K) which includes
forecasts for EFD applications and related markets.
still rule in industrial SSDs?|
|Editor:- May 3, 2012 - I've
been talking this week to a reader who has been looking for high capacity
industrial 2.5" MLC SSDs for a project which - because of where it's
used - really does need the full industrial temperature range.|
he'd been having difficulties. Anyway I suggested he look at the
directory (this page) and contact all the companies to see who did have
such a product and after a lot of work he has found some possible suppliers -
but the success rate comes out as about 20% - or 1 in 5 industrial SSD
oems actually having a useful MLC product in this category. So this is still a
part of the SSD market where SLC reigns supreme - regardless of what you hear
about in the
markets. (And the other SLC SSD bastion is
said - I think that one of the problems in finding cheaper MLC SSDs for
industrial temperature apps is that the few companies who really have the IP to
be able to design such a product from the
controller stance -
mostly pursue bigger markets - like consumer. And even if the consumer guys
do have the controller technology for extended temperature MLC - they don't
cope well with other factors - like
sudden power loss. But it's good to know that some companies can do it -
even if it's less than you would expect.
A few hours after posting the
above - I got this helfpful comment from another reader (on a different
Kindl, Managing Director at Solid State Storage Consulting in
Germany emailed me to say -
Hi Zsolt, I'd like to comment on your
today's news "SLC still rules in industrial SSDs" and your
industrial grade SSDs.
The most critical criteria for industrial clients is neither of
technological nor technical nature, but a process management topic:
industrial clients expect a true fixed BOM management by the supplier, in order
to get exactly the same product, that they had qualified for their system.
Fixed BOM has become a sales & marketing argument and is being misused. Many
suppliers allow "minor" changes, i. e. F/W updates or even dye changes
under their "fixed BOM" definition, which can cause severe integration
issues at the client's site.
Digging deeper into that subject, fixed BOM suddenly turns out to be
marketed the same as so called controlled BOM for certain suppliers, whose core
business is still the commercial or client SSD market.
In addition, it's my experience, having been in that market since
2005, that the typical life time expectation for SSD product is closer to 7+
years - at least with most German industrial clients (telecom, IPC and
industrial automation). And in many cases, you start the evaluation with a
current product generation, that will be almost EOL by the time the client has
finished his qualification.
Therefore, sharing the product roadmap and migration plan becomes
an important issue, in order to minimize re-qualification cost. This is also
becoming a major challenge as most Asian suppliers are hesitant to even talk
about current technological matters like NAND flash supplier and lithography
being used in the product as well as the NAND flash controller manufacturer.
The top tier industrial clients in Central Europe have a certain
expectation by history of the past 5-8 years and new comers don't seem to
understand the market requirements when they enter that market. At this year's
Embedded World in Nuremberg, Germany it became very obvious, that many new and "old"
suppliers (Kingston!?) want to get a decent piece of that tasty cake.
Best regards - and keep up the good work at storagesearch.com
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
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