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Dell & Dell/EMC Storage
Joined on 03/11/2009 Posts: 2
Points: 185
Copper

Thinking Differently About SSD

When I talk to customers about storage challenges and technologies, it is always interesting to get their thoughts on one of the areas that has gotten a lot of attention over the last couple of years: flash or solid state drives (SSD).

Invariably, this discussion’s first stop is “those things are ridiculously expensive, right?”

Thankfully, the discussion is moving past this initial reaction and looking at SSD as an entirely different beast that should be evaluated, not in a $/GB comparison with spinning hard drives, but in other more meaningful and relevant ways.

This article by Storage Switzerland does a great job calling out the benefits of SSD versus traditional spindle-based hard drives for performance sensitive applications, how you might think differently about comparing the costs of implementing and managing SSDs, and that you may find it makes sense to do it now. 

I also recently saw another article by Bert Latamore on Wikibon that provides additional insight by looking at the lifetime cost of flash versus traditional hard drives. I look forward to seeing more discussions like these that help organizations solve storage challenges by thinking about new, more meaningful ways to compare various technologies in  an “apples-to-apples” way.

Let me be clear, SSD isn’t for everyone yet, but it can make sense for a lot more people than are considering implementing them now – if they were evaluating SSD in a new way. 

Leave a comment below with your thoughts, and follow me on Twitter for more thoughts and conversations on storage, green IT, conservation and more.

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The information I've found suggests that the general speed of SSD's by manufacturer's other than INTEL is improving steadily and while $/GB is higher than conventional HDD it is coming down as it always does with new technology. My real concern at present is low service life, as writes seem to (so far anyway) have a finite value. Once that hurdle is cleared, who needs moving parts and heat?

 

While SSD has only recently been pushed into multple consumer and enterprise platforms in mass market in the last few years the technology has been largely available since 1998. The earliest versions of SSD drives were actually available in competition to spindle Hard Disks in the 1970's.

http://www.storagesearch.com/chartingtheriseofssds.html  

 

 I like this article on how to analyze the advantages of SSD beyond a $/GB comparison.

I did some research a few months back on the types of SSD drives out on the market and the underlying technology differences in the memory chips. I found this general WIKI to be very informative of the perforamce differences in the chips and bus through put. http://en.wikipedia.org/wiki/Solid-state_drive 

If you want to get down and dirty with the reliability of the chips and the cost differences between SSDs, the conversation  about SLC Nand vs MLC Nand would need to take place. This page on Microns website has many documents relating to the differences in the chips as well as several underlying technologies. http://www.micron.com/products/nand/mlc-slc 

This Page has a great approach to presenting the differences in a relatively easy to understand discussion. The Super Talent document referenced on the bottom of this article details the endurance of the two chips, SLC devies having 10x the endurance of MLC is on page 8 o fthe document.  http://www.smxrtos.com/articles/mlcslc.htm