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Coho Data

Coho Data is delivering storage for the cloud generation. Led by a team of XenSource/Citrix virtualization and storage industry veterans, Coho Data is enabling businesses of all sizes to build their own high performance Amazon-style storage for their data. Inspired by the highly scalable, commodity-hardware based approaches of public clouds, the company is developing the first flash-tuned scale-out storage architecture designed for the private cloud that delivers unparalleled performance at public cloud capacity pricing.

Founded in 2011 and funded by Andreessen Horowitz, Coho Data has offices in Vancouver, British Columbia and Sunnyvale, California. For more information, visit Coho Data and follow us on Twitter at @cohodata.

Editor:- June 25, 2015 - Coho Data was one of the fascinating near misses in the recently published Top SSD Companies in Q1 2015.

Who's who in SSD? - Coho Data

by Zsolt Kerekes, editor -

Coho is active in the rackmount SSD server market.

The company's product line began with SSD ASAPs (auto tiering / caching appliances) and has recently been augmented with compatible all flash arrays.

Coho's products are application servers (in our enterprise SSD latency differentiated silos model).

In common parlance they are one of the many subset architecture types in the SDS market.

The company is a relative newcomer to the enterprise SSD market having first entered the pages of in November 2013.

articles related to Coho's segments of the SSD market
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Coho Data now shipping 2U MicroArray hybrids
Editor:- March 6, 2014 - Coho Data today announced general availability of its first product - a 2U SSD ASAP called the DataStream (an SSDserver 4/E) - which integrates PCIe SSDs, hard drives and a server into a web scale expandable unit (using an internal 52 port 10GbE fabric switch) to implement what the company refers to as a "MicroArray" designed with the philosophy of "Turning Tiering Upside Down (pdf)" to deliver a base building block unit of 180K IOPS performance (4KB).

Editor's comments:- you may judge for yourself the lofty scale of Coho's ambitions by this market soothsayer quote which they integrated in the launch press release - "By 2017, Web-scale IT will be an architectural approach found operating in 50% of Global 2,000 enterprises."
Coho Data gets $25 million for 2U SSD ASAPs
Editor:- November 5, 2013 - Coho Data (which recently emerged from stealth mode and operates within the hybrid systems - SSD ASAPs market with a cloud market focus) - today announced it has got $25 million in Series B funding - led by new investor, Ignition Partners, and also including existing investor, Andreessen Horowitz.

The funds will accelerate Coho Datas R&D and go-to-market efforts as the company prepares for general availability of its Coho DataStream system later this year.

Editor's comments:- What I like about Coho Data is the clarity about what it offers:- "Build your own high-performance Amazon-style storage for all your data."

What I'm less gung ho about, however, is the apparent efficiency.

For example - one of the "difference" features which Coho talks about on its website is the easy way that users can scale to multi-petabyte installations - using its 2U building blocks which have Intel PCIe SSDs inside and some hard drives.

The example shown on this Coho page says you can build a 190TB hybrid apps server which does 900K IOPS in 11U of rackspace for $530k list. That may sound good compared to museum grade alternatives - but Coho's solution takes 2x to 3x the rackspace of leading pure SSD HA based systems to do the same thing.

Now - size isn't everything. And neither is scalability. And for many users the ease of managing incremental growth might be compelling reasons to look at this type of product. But most of you pay more per square foot for your floor space than Amazon - so an "Amazon style" product proposition may not be the best for you.
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Coho adds all flash nodes to its hybrid product mix
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Editor:- May 20, 2015 - Coho Data today announced it has closed $30 million in Series C funding, bringing its total funding to nearly $67 million.

The round was led by March Capital Partners, with additional participation from HP Ventures and Intel Capital as well as existing investors Andreessen Horowitz and Ignition Partners.

Coho Data also announced the general availability of its first all-flash storage node, the DataStream 2000f a 2U server based system which uses Intel's P3600 2.5" NVMe SSDs and conventional SATA SSDs.

Coho says that using a judicious mix of its variously populated SSDservers (which includes micro-tiered hybrid systems as well as the new pure SSD nodes) "empowers customers to efficiently support any application at any scale, all from a "single pane of glass" management interface, and all at less than $0.10/GB usable per month."
90% of the enterprise SSD companies which you know have no good reasons to survive.
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Efficiency is important for web scale users - says Coho
Editor:- October 9, 2014 - Facebook as a file system - a web scale case study - a new blog by Andy Warfield , cofounder and CTO - Coho Data - made very interesting reading for me - as much for revealing the authoritative approach taken in Andy's systematic analysis - as for the object of his discussion (Facebook's storage architecture).

It reveals useful insights into the architectural thinking and value judgments of Coho's technology - and is not simply another retelling of the Facebook infrastructure story.

When you read it you may get different things out of it - because it's rich in raw enterprise ideas related to architecture, software, and dark matter users. All of which makes it hard to pick out any single quote. But here are 2.
  • re - the miss match between enterprise products and user needs

    Andy Warfield says - "In the past, enterprise hardware has had a pretty hands-off relationship with the vendor that sells it and the development team that builds it once it's been sold. The result is that systems evolve slowly, and must be built for the general case, with little understanding of the actual workloads that run on them."
  • re efficiency and utilization

    Andy Warfield says - "Efficiency is important. As a rough approximation, a server in your datacenter costs as much to power and cool over 3 years as it does to buy up front. It is important to get every ounce of utility that you can out of it while it is in production."
There are many more I could have chosen. ... read the article

"One of the potential issues I could see with one of the vendors I interviewed with was their plan for scalability."
Why I Joined a Scale Out Storage Company - by Christopher Wells, Coho Data (April 15, 2014)

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Decloaking hidden segments in the enterprise
Editor:- May 28, 2014 - today published a new article - Decloaking hidden segments in the enterprise for rackmount SSDs

Some of the world's leading SSD marketers have confided in me they know from their own customer anecdotes that there are many segments for enterprise flash arrays which aren't listed or even hinted at in standard models of the enterprise market.

Many of these missing market segments don't even have names.

Hey - that means SSD-world is like a map of the US before Lewis and Clark.

If you're a VC should this make you anxious or happy?

If you're a user - maybe that's why no one is delighting you in the way you think you deserve.

That's what led me to write my new article.

See also:- rackmount SSDs, SSD silos, market research