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DDRdrive

DDRdrive LLC is now shipping the DDRdrive X1, a PCI Express solid-state storage accelerator with over 300K random IOPS performance. Based on a breakthrough architecture that integrates both DRAM and NAND to provide unparalleled random IOPS, IOPS/W, and IOPS/$ performance. The DDRdrive X1 is "The drive for speed".
.... DDRdrive click for more info

See also:- DDRdrive - editor mentions on STORAGEsearch.com

Editor:- July 23, 2015 - Whatever happened to the market idea of RAM SSDs integrated with PCIe interfaces?

The early market promise of this concept probably got killed off by hybrid DIMMs - which are essentially RAM SSDs with a DRAM interface and form factor. If your SSD needs can be satisfied by low multiples of 8GB DRAM - then that's probably a better solution to explore instead.

On the other hand - if your need much bigger capacities and flash - then the SSD software writers are getting cleverer at bypassing legacy stacks (and co-operating with them) which gives you more viable options for SSDservers than used to be the case.

Who's who in SSD? - DDRdrive

by Zsolt Kerekes, editor - StorageSearch.com October 2011

DDRdrive's PCIe RAM SSDs don't have the same IOPS problems as flash SSDs but do have much lower capacity. They can be an economic choice for some classes of applications. Although the company started in the Intel market - they are now moving into the Solaris market too.

If you're considering products from DDRdrive then you should also look at flash based competing PCIe SSDs from these companies too:- Foremay, Fusion-io, InnoDisk, LSI, OCZ and Texas Memory Systems.

...Later:- - In 2015 PMC markets a product line of PCIe RAM SSDs - called Flashtec NVRAM drives - which are similar in concept to DDRdrives.

Another alternative for low capacity, flash backed RAM tiers is hybrid DIMMs.
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DDRdrive milestones from SSD market history

November 2006 - DDRdrive started shipping its 1st generation of SSD accelerators for use in an undisclosed secret project inside Intel.

In May 2009 - the company emerged from stealth mode and launched the DDRdrive X1 - a PCIe compatible RAM SSD with onboard flash backup. Backup / restore time is 60S. Performance is over 300K IOPS (512B). R/W throughput is 215MB/s and 155MB/s respectively. Capacity is 4GB. OS compatibility:- Microsoft Windows (various). Price is $1,495.

The DDRdrive X1 looks competitively priced for accelerating database applications in which the hot files can utilize a capacity range from about 4GB to 12GB. Above that - you get into the region of entry level rackmount SSDs and high performance PCIe flash SSD cards from companies like Fusion-io and Texas Memory Systems.

There's definitely a gap in the market for this scale of product (low entry price, low capacity - high IOPS).

In November 2010 - DDRdrive published a white paper which compares flash SSDs vs RAM SSDs (pdf) as accelerators in ZFS environments.

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All the systems in the market today are implementations of transient architectures...
what kind of SSD world can we expect in 2015?
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The idea of using flash as a new memory tier isn't new. And neither is the idea of using flash in DRAM memory slots. But in 2014 there were several developments which added weight to the usefulness of these ideas.
12 key SSD ideas which changed in 2014
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"If you can make a single server run apps 10x or 20x or 100x faster - by stuffing it with high capacity, low latency SSD - then you don't need so many servers."
...from the article:- if Fusion-io sells more SSDs does that mean Violin will sell less?
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the 3 fastest PCIe SSDs?
Are you tied up in knots trying to shortlist flash SSD accelerators ranked according to published comparative benchmarks?

You know the sort of thing I mean - where a magazine compares 10 SSDs or a blogger compares 2 SSDs against each other.

It would be nice to have a shortlist so that you don't have to waste too much of your own valuable time testing unsuitable candidates wouldn't it?

If my article - the 3 fastest PCIe SSDs list (or is it really lists?) may help you cut that Gordian knot.

Hmm... you may be thinking that StorageSearch's editor never gives easy answers to SSD questions if more complicated ones are available.

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