Posted May 23rd, 2013

Resilient Flash Arrays …Anyone?

By Shachar Fienblit
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As enterprises demand more speed and agility from their infrastructures, the performance advantages of flash are critical for addressing the requirements of next-generation businesses. In building an enterprise-ready all-flash solution, we knew our architecture had to solve some of the technical challenges that hadn’t been successfully addressed in the past. This included resiliency, data protection, and scalability.

One of the critical areas we’ve been able to address with a breakthrough solution has been in extending the endurance of flash technology. Endurance is a critical factor in making flash enterprise ready. In fact, one vendor recently released a study in which 77% of respondents said that they believed that the endurance of flash memory is the key to the widespread adoption of SSDs in the enterprise.

How have we been able to achieve new levels of endurance? It all starts, of course, with SPEAR (Scale-Out Performance and Resilience Architecture), which is the foundation for our recently introduced fourth-generation K2 all-flash storage array. As a true scale-out architecture, SPEAR enables us to spread the load very intelligently to maximize flash endurance. Here are some of the keys:

  1. SPEAR utilizes a system-wide write cache that eliminates hot spots.

  2. By using cache for writes, SPEAR is able to minimize the number of writes and distribute writes across all flash media in the system. The system never writes to the same place twice.

  3. SPEAR’s efficient management of metadata eliminates writes to the flash during updates and facilitates space-efficient snapshots that do not incur additional writes.

  4. K2 deploys the highest enterprise-grade SSDs with advanced flash management capabilities that optimize the endurance of the flash.

  5. Writes in K2 are always sequential to the flash media.

  6. SPEAR uses advanced error correction

By building all of these features and functions into SPEAR, Kaminario has been able to prolong the endurance of flash far beyond the spec limits of flash manufacturers, and beyond the limits of almost every competitor building all-flash arrays. When it comes to endurance for enterprise-ready flash arrays, we continue to lead the industry.

Check out our white paper on SPEAR Architecture.

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Posted May 21st, 2013
Ritu Jyoti

Lack of Consistency Can be a Killer

By Ritu Jyoti
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Every flash array vendor out there yammers on about high performance, including us. That’s what we’ve come to expect from flash arrays. SSD flash is quickly becoming mainstream technology at the enterprise level because of its performance and affordability.

The reality is, it’s not all about high performance in I/O. Enterprise storage requires the ability to support a mixture of workloads, with consistent, predictable IOPS, bandwidth and latency.

Let’s look at some real world examples:

  • Any Business: It’s the end of the fiscal year. The sales team is hammering their CRM trying to close business and finance is running a massive number of queries to get reporting ready for end of quarter. Which business unit could afford to lose performance? How about… Neither.

  • Retail: Sales order entry transactions are constantly competing with accounts receivables and payables entries for performance. Do you want to get paid, or do you want more sales? That’s an easy one! Both.

  • Manufacturing: Assembly line transactions are constantly competing with accounts receivables and payables. Slowing down an assembly line can cost millions of dollars, and often times, lost opportunities. Not really an option, right?

The choices are loss of productivity, which ultimately results in loss of profits in the immediate term, and future growth, a.k.a. losing your edge in the marketplace. Neither of these sound good to us, and definitely don’t sound good when considering the impact on your business.

This is why the Taneja Report results were so exciting for us. The testing group showed that doubling the number of K-Blocks doubles I/O and bandwidth performance while keeping latency consistently low (see the below table for specific results). There were no IOPS that impacted overhead in scaling the Kaminario K2 with a read-heavy workload.



The Taneja Report also tested latency during snapshots, showing that latency stayed consistent and predictable when snapshots were executed, with a near zero impact on executing I/O. Plus, the snapshot was completed in less than one second. Multiple loads were running at the same time, yet the impact on latency was also negligible. Even in the event of a hardware failure, performance remains consistent and predictable.

I urge you to consider consistency in performance across workloads as a top tier requirement when looking at storage performance. Considering what you have to lose, consistency really is a no-brainer at this point.

To check out the report, click here.

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Posted May 14th, 2013
Ritu Jyoti

Kaminario Dubbed ‘A Force to Be Reckoned With’ in Latest Taneja Group Report

By Ritu Jyoti
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It is no secret that scalability has long been the elephant in the room for most solid-state storage vendors. The fact that most solid-state vendors can’t scale creates multiple storage silos driving up operational overhead and costs. Scalability and predictive performance are essential to maintaining mission critical storage access, yet few have been able to architect their way to an effective solution. We keep hearing rumblings from the big guys about their scale-out solutions, but no GA yet. Meanwhile, Kaminario has been providing customers with true scale-out architecture since 2010. The fact is Kaminario is the only enterprise scale-out all-flash array vendor on the market today.

In the newly released independent report by Jeff Boles, senior analyst with the Taneja Group, “Kaminario K2: The Truly Enterprise-Ready SSD Storage Array,” the firm evaluated Kaminario’s newest scale-out all-flash storage array (K2), testing performance, scalability, storage capabilities and resiliency in databases and virtualized environments.

The report validated Kaminario’s scale-out architecture and its ability to deliver customers with consistent, unsurpassed performance in any mixed workload. The tests also confirmed K2’s ability to provide ready-for-enterprise features on top of the most sophisticated resiliency approaches on the market. As noted, “…better than linear progression of performance in terms of both IOPS and bandwidth, with 1ms or less of latency”, and following a node failure concluded that, “Kaminario K2 effectively maintains mission critical storage access, making disk, node or subsystem failures inconsequential.”

So how did the Taneja Group think Kaminario faired against everyone else clamoring for a seat at storage performance table? Pretty well it would seem, as the firm cited Kaminario as “a force to be reckoned with” amongst its competitors.

We’ve worked incredibly hard to make K2 the best product on the market today. We knew we created something to be proud of, and are extremely pleased to see that the Taneja Group agrees. We urge you to judge for yourself. To request a copy of the report, click here.

Our team is ecstatic about the results! We hope you will be, too.

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Posted April 17th, 2013
Dani Golan

Delivering on Our Vision for Enterprise Storage

By Dani Golan
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Today is an important day, not just for Kaminario but, we believe, for the entire enterprise storage industry. Today is the day we announce the Kaminario fourth-generation K2 all-flash storage array. What is so important about our fourth-generation product? Here are a few key points:

Breakthrough TCO: With K2 v4 we have been able to increase the density by more than 500% while cutting the price in half. Why is this so significant? Lowering the cost of enterprise-ready solid-state flash storage has been one of the long-time goals of the industry. If you believe, as we do, that solid-state is the future of Tier One storage, then it must be cost-efficient for all applications, not just those requiring the highest levels of performance. And now it is. What’s more, Kaminario’s TCO breakthrough extends the viability of solid-state to a new class of mid-size customers who can now afford unprecedented levels of performance, resiliency and ease of use from their storage infrastructures.

Killer Performance: Even before today’s announcement Kaminario delivered by far the best performance in the industry, with world record SPC-1 results for sustained performance and price/performance. With K2 v4 we now have 400% more read/write bandwidth than our previous versions, with consistently low latency (120-microsecond writes). Topping it off, we still offer industry-leading IOPS performance. K2 v4 delivers significant across-the-board performance advantages over any other solution for any combination of workloads, be they OLTP, OLAP or virtualization. It’s a level of performance consistency that is unparalleled in the industry.

Bulletproof Resiliency: Our proven SPEAR Scale-Out Architecture maintains data integrity through any type of failure. For most workloads the performance levels of our solutions will be minimally impacted—usually less than 10%. We even guarantee that degradation will max out at 25%. What’s more, our snapshots are the most efficient in the storage industry, enabling instant restore and recovery from any snapshot with no impact on the performance of the production environment. Snaps can be taken in just milliseconds, 20 times faster than any legacy SAN system on the market today. We make snapshots sexy.

These are major advances in solid-state that have been more than five years in the making. They move storage technology to a whole new level. Don’t just take our word for it: Take a look at the new architectural white paper or better yet, the independent report.

On a personal note, it is an important day for me, as well as for the entire team here at Kaminario. From the beginning we envisioned a new era in enterprise storage driven by solid-state flash and a true scale-out architecture. As of today, that vision is a reality. What’s next? We can’t wait to tell you…

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Posted March 25th, 2013

Good Riddance Indeed to the Spinning Disk Era

INFOWORLD AUTHOR LAMENTS USE OF ANCIENT STORAGE TECH

By Kaminario
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grim reaperEarlier this year, InfoWorld’s Paul Venezia penned Good-bye – and good riddance – to spinning disk. In it, he laments the continued use of “ancient storage technology” and foresees “a post-storage world” where the industry is “devoid of the painfully outdated yet ubiquitous spinning disk.”

His take fits our view that hard disks are headed the way of the floppy though he says that in some scenarios, HDDs will be used like the way tape is used today. I suppose the alternative is simply recycling.

Venezia says “rethinking centralized storage is a necessary part of this transition [to all SSD].” He is right, but you also have to rethink how you evaluate SSD storage solutions too. Innovation is making hardware dumb and software smart. SSD hardware in the enterprise is fast becoming a commodity and prices are falling in line with that movement. More important than the media itself when comparing your SSD options, software capabilities should trump hardware. Focusing too much on hardware and not enough on the software platform wrapped around it introduces greater risk of quick obsolescence and the inability to adapt to changing requirements.

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Posted March 6th, 2013

Flash Immortal

Discovery could extend Flash life from 10,000 write cycles to more than 100 million

By Kaminario
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An interesting Gizmodo article entitled Hot Flash: The Secret To SSDs That Will Outlast The Universe discusses a new discovery claimed by Taiwanese Flash manufacturer Macronix that by periodically applying intense heat to MLC Flash for milliseconds they can increase its life from 10,000 write cycles to more than 100 million. How does it work? Flash writes erode transistor insulation slowly until eventually the chip is no longer viable. Add a quick jolt of 800 degree-centigrade heat and you can actually heal the insulation for another 5 to 10,000 writes.

No doubt this is an important discovery, but the truth is that the life limitations of flash are greatly exaggerated even today. Flash manufacturers and solution vendors have come up with a raft of technologies, including wear leveling, advanced error correction, and sophisticated digital signal processing, to ensure your Flash device can last almost as long or longer than a typical hard disk.

Read the rest of this entry »

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Posted March 4th, 2013

Next Phase of the MLC Flash Revolution – General Purpose Storage

USERS WANT SCALABILITY, DATA PROTECTION AND STORAGE PERFORMANCE TOO

By Kaminario
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In 2013, MLC Flash as general purpose storage will be a major area of industry attention because users are demanding many of the same features they are used to getting with HDD technology but with the added capabilities of MLC Flash. Customers must have scalability and data protection as well as performance to make the case to jump to SSD.

Focus on Scalability
Scalability is a cornerstone element of a general purpose storage strategy and a solid differentiator for Kaminario. However, we view it a little differently than other vendors:

Linear Scalability: Grow Capacity Not Complexity
There is a difference between adding capacity and scalability. Adding capacity is stacking storage hardware while scalability is intelligently absorbing storage. We view scalability as linear and driven by powerful software like SPEAR to enable distributed workloads managed from a single console. Linear scalability increases operational efficiencies and ease-of-use. Simply adding capacity means multiple management consoles, more complexity and more points-of-failure.

Linear Scalability Enables Consistent Performance of Mixed Workloads
Our view of true scalability provides users with consistent latency as IOPS and bandwidth are scaled up. Users should not have to pay a performance tax for consolidating applications or deploying data protection features. There should be no performance surprises.

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Posted February 26th, 2013

Measure Performance Over Time and with Three Dimensions

ANALYST SURVEY LOOKS AT REAL-WORLD IOPS REQUIREMENTS

By Kaminario
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F-15 at Supersonic SpeedsTom Coughlin and Jim Handy, respected storage analysts, conducted a survey on how many IOPS are really needed for several popular enterprise applications to better understand real-world IOPS requirements. They asked respondents about their critical storage applications and how many IOPS those applications needed. More than 80 percent of their initial respondents said that their key app was a database, an OLTP solution or a Cloud storage service. About half of the respondents said their IOPS needs were in the 1k to 100k range. Coughlin and Handy note that other factors like latency contribute to overall performance, not just speed. You can view research details from a presentation that Tom did at the SNIA Storage Developer conference, How Many IOPS is Enough? or get the full report at How Many IOPS Do You Really Need?

Measure Consistent Performance
I am bringing this up now as a way to comment on how Kaminario looks at performance. We do not see performance as a point in time such as timing a runner in a single forty-yard dash. True performance is measured by consistency of speed and results over time and as capacity and applications are added. You shouldn’t necessarily buy an all-Flash array based of the performance of a single app because there are so many variables that can come into play down the road. This is one of the reasons that Kaminario is taking the general purpose storage approach with the K2. We think it is smarter to evaluate a Flash storage system in the context of your entire storage environment and future app needs. You don’t want to buy a system that gives you great value up front but falls short in mixed workload environments. You don’t want to have to buy a separate storage system when you introduce a new application or need to drastically scale up capacity.

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Posted January 23rd, 2013

Shared SSD Arrays for Big Data Performance and Reliability

Speed isn’t everything

By Kaminario
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sharingA November 30 Fusion-io blog entry, Cisco and Fusion-io Tackle Big Data with Oracle NoSQL, highlights blazing NoSQL big data performance achieved by a Cisco Unified Computing System (UCS) configured with server-based Fusion ioDrive2  SSD. The blog and linked Cisco Solution Brief discuss the importance of near-real-time performance when running operations on user profile data in an e-commerce transaction scenario. Fast performance is key to e-commerce customer satisfaction and can be difficult to achieve with the widely fluctuating workloads typical of a busy e-commerce site.

Fusion-io and Cisco make a compelling argument for SSD in near-real-time big data scenarios and for server-based SSD in particular. However, it’s important to remember that for business critical big data applications, you need scalability and bulletproof reliability as well. There’s another solution that is both more reliable and more efficient than server-based SSD: SSD arrays such as the Kaminario K2.  Here are some reasons why you should consider an SSD array, and, specifically, a Kaminario K2 with its Scale-out Performance Storage Architecture (SPEAR), for your near-real-time big data needs. Read the rest of this entry »

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Posted December 19th, 2012
Dani Golan

2012 Year in Review: SSD Grows Up

By Dani Golan
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2012 Year in Review: SSD Grows Up2012 was the year SSD started moving from niche status into the enterprise mainstream, building up the seasoning and enterprise-class features it needs to take off in the years ahead. It’s obvious that enterprise IT is taking notice, feeling more comfortable with the technology, and becoming more aware of its benefits and best uses.

Here are some of the trend highlights we noticed over the past year.

Sales continued to grow – SSD sales continue their upward trajectory. According to IDC, the market for enterprise SSDs will continue to grow to $5.5 billion in 2015. SSD shipments in general reached 12.9 million units in the first half of 2012 and are expected to reach 28 million in the second half, according to HIS iSuppli Memory and Storage Service.

SSD continues to close the price gap with HDD – Flash pricing continues to become more competitive with hard disk storage, and the gap is narrowing. SSD prices continued to fall this year, with the bare media cost falling well below $3 per gigabyte in 2012, compared with almost $9 per gigabyte in 2010. Adding to the lower cost are the cooling and real estate advantages of an SSD array compared with hard disk storage.

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