Introducing the “Architecture Matters” Blog Series

Posted by Tim Stoakes on Jan 19, 2015 5:01:05 PM

Inarguably, it has never been a better time to be a storage user deciding on a next-generation all-flash array. The last 18 months have been a phenomenal time for the storage industry, with a flurry of all-flash array product announcements, each claiming unique approaches to solving the challenges of getting rid of disk and going all-flash.

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Topics: Business, Technology Trends

Cloud Computing

Posted by VIOLIN SYSTEMS on Jan 5, 2015 9:00:45 AM

Run a simple search. “What is Cloud Computing?”

It will yield thousands of whitepapers, blogs and videos, some a few short words, some that run to great length. All of them saying essentially the same thing: cloud computing is there when you need it and not there when you don’t.

Imagine that you are in a meeting on a new business iniative. Tremendous new data sets will be generated and required service levels will be high. You send a text to your leading cloud storage provider requesting 30 Terabytes of additional storage with the maximum available data protections applied, and it must be available ASAP… “Done” the reply text a few seconds later.

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Topics: Business Applications, Technology Trends

CIO Predictions 2015

Posted by VIOLIN SYSTEMS on Dec 23, 2014 12:05:20 PM

With smartphones now carrying more power than the original PC’s and laptops, IT has become a commodity to many C-level execs similar to chairs, machinery, or any other item used to run a company. CIO’s are now constantly challenged by other C-level execs – CEO's, CFO's, and Line-of-business owners – on what IT is doing to “impact the business.”

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Topics: Technology Trends

Violin Systems and OpenStack Momentum

Posted by VIOLIN SYSTEMS on Nov 20, 2014 3:21:55 PM

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Topics: Erik Randles, OpenStack, Private Cloud, Business, flash, Products, Server, Technology Trends, Virtualization

Chat with Team Violin this month in Manhattan, Paris, Seattle & Austin!

Posted by VIOLIN SYSTEMS on Oct 31, 2014 5:21:35 PM

Chat with Violin Systems in a town near you! Visit with Violin in Manhattan, Paris, Seattle and Austin! Find out for yourself the business advantages of All Flash Arrays from Violin Systems.

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Topics: Business Applications, events, SQL, Technology Trends

Latency Matters

Posted by VIOLIN SYSTEMS on Jan 24, 2014 1:41:06 PM

Independent studies by Google and Microsoft’s Bing team were seeking to understand the impact of latency on user behavior. Their studies generated surprising results. The companies presented their results jointly at the O’Reilly Velocity conference in San Jose CA in May of 2009.

They wanted to assure their investment in systems to deliver search results and advertising was indeed based on user results, and if possible, business impact. The fact that these two companies came to very similar conclusions after their independent experiments brings a lot of credibility to their joint conclusion. The result of their research: latency matters.

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Topics: google, latency, performance, productivity, response time, Technology Trends

The Advantages of Inline Deduplication?

Posted by VIOLIN SYSTEMS on Dec 14, 2013 9:30:16 AM

Many vendors make some very interesting claims about their inline deduplication feature and why it is superior to post-processed deduplication.

Their claims:

  • Save you space
  • Increase the endurance of the flash by eliminating writes
  • Increase the performance by not sending writes to their SSDs

The purpose of this blog is not to  weigh in on which inline or post-processed dedupe is “better” but to make clear that the supposed advantages of inline dedupe, improved endurance and increased performance, DO NOT EXIST! 

How can this be? The key point to understand is that BLOCK STORAGE deduplication ratio and the WRITE ELIMINATION ratio due to deduplication have nothing whatsoever to do with each other.

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Topics: Technology Trends

Garbage Collection & XtremIO – Fiction & Fiction: Part III

Posted by VIOLIN SYSTEMS on Dec 10, 2013 3:56:05 PM

Part II of this series on the XtremIO product launch triggered some questions, which I will address in this post.

  • Is the performance of XtremIO “consistent” AND “predictable”?
  • Is it even “consistent” OR “predictable”? 
  • Is it “the only all-flash array that requires no system-level garbage collection yet maintains consistent and predictable performance.”?
  • Does it provide “the industry’s most consistent performance”?
  • Does it never happen that “IOPS suddenly drop and latency suddenly increases”?
  • Is their mixed R/W performance “stable”?

Let’s check the XtremIO Spec Sheet for the 2 brick system they were using in their demos during their product launch.

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Topics: Technology Trends

Garbage Collection & XtremIO – Fiction & Fiction: Part II

Posted by VIOLIN SYSTEMS on Dec 9, 2013 2:12:46 PM

In Part I of this series, I told you to take note of this slide and that we would revisit it to show just how misleading the XtremIO launch really was.

Now, before I get into what this says about XtremIO, let me first explore what it does not say about “Startup,” who, from context, appears to be Pure Storage. Pure Storage is my competitor and I am not going to tell you I think their product is even remotely as good as ours (I’m sure they would say the same thing), but that doesn't mean that I will let EMC make itself look better than Pure when I would argue that it is the other way around.

Let’s examine the numbers EMC presents and separate fact from fiction.

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Topics: Technology Trends

Garbage Collection & XtremIO – Fiction & Fiction: Part I

Posted by VIOLIN SYSTEMS on Dec 6, 2013 2:31:37 PM

This post is part of a series of posts (starting with XtremIO - At the Bit Level) where I will explain not only the significant architectural failings of the XtremIO product, but also the fundamentally and deliberately  misleading way they have presented their product to the market, in my opinion.

During EMC’s launch of their XtremIO product, they made a number of jaw dropping claims, which they now seem to be trying to pretend were never said, such as one XtremIO blogger who comments:

One of the eye opening claims we made during our launch on November 14th was that the XtremIO array doesn’t have any system-level garbage collection processes.  In the coverage and chatter that followed our launch we noticed that some people interpreted this to mean that the flash in our arrays was somehow impervious to the need for garbage collection, which of course is impossible.  To be clear, all flash requires garbage collection.  What matters is where and how it is performed.  With XtremIO, performance is always consistent and predictable because garbage collection is handled in a very novel way, only possible with XtremIO’s unique architecture.”

What is the very novel way that XtremIO handles garbage collection? What is it about their architecture that is so unique that only their approach makes this possible?  In this second post, we try and answer these questions, and we are sure the answers will surprise you.

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Topics: emc, flash storage, Products, Technology Trends