Condusiv Technologies Blog

Condusiv Technologies Blog

Blogging @Condusiv

The Condusiv blog shares insight into the issues surrounding system and application performance—and how I/O optimization software is breaking new ground in solving those issues.

What is unnecessary I/O? Why does it exist?

by Brian Morin 5. November 2013 07:09

Modern IT infrastructures deal with enough I/O traffic as it is. The last thing they need is unnecessary I/O.

It's no surprise that IT struggles with performance problems caused by the tidal wave of data that travels back and forth across the infrastructure in the form of read and write I/O. Organizations that have virtualized find themselves in the position of trading more and more costs to the storage backend to keep up with I/O demand. The negative impact that virtualization has had on the storage layer is felt, that’s for sure, but it isn’t well understood.

With the proliferation of multiple VMs accessing the same bytes of data and the nature of the “I/O blender effect” that further randomizes I/O streams from multiple VMs before funneling down to storage, a large amount of I/O cycles are completely unnecessary. In a world where organizations are already crushed under the weight of I/O demand, the last thing they need from their IT infrastructure is lost cycles spent processing unnecessary I/O.

Even though this random I/O chaos can be easily prevented in the virtual machine layer before it ever leaves the gates, organizations continue to invest in more hardware to battle an increasingly complex problem.

Check out this new paper from IDG, Eliminate the Unnecessary: Unnecessary I/O and its Impact on Performance. You'll understand unnecessary I/O, why it matters, and how getting rid of it will solve performance problems—overnight—without more hardware.

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Big Data | Cloud | IntelliMemory | IntelliWrite | SAN | virtualization | V-Locity | VMware

Four Reasons to Migrate from Diskeeper Server to V-locity Server

by Robert Woolery 30. July 2013 08:19

Still on Diskeeper Server? Here’s four reasons to consider migrating to V-locity Server: 

1. High performance. Whereas Diskeeper® Server, highlighted by IntelliWrite® technology, keeps Windows servers running like new, V-locity® Server goes a step beyond split I/O elimination with the inclusion of a server-side caching engine (IntelliMemory) for performance boosts of 50% or more. With frequently-accessed data dynamically cached within available server resources, hot data no longer trudges the full distance from server to storage and back, consuming unnecessary bandwidth.

With IntelliWrite preventing split I/Os on write requests, and IntelliMemory caching active data on reads, this holistic approach to I/O optimization accelerates the entire IT infrastructure since unnecessary I/O traffic is now eliminated before it is pushed through server, network and storage. 
 

2. Network storage. Whereas Diskeeper Server is ideal for local server storage or direct-attached storage (DAS), V-locity Server is designed for network storage (SAN/NAS) since all I/O optimization occurs at the Windows OS layer, leaving the storage device untouched. With IntelliWrite, V-locity Server proactively eliminates split I/Os as close to the application as possible, and by caching active data within available server memory, IntelliMemory eliminates even more unnecessary I/O—preventing I/O traffic from traveling the full distance to storage and back. Since the storage subsystem is now processing considerably less I/O, bottlenecks are eliminated and more bandwidth is available. 

3. Solid-state storage. Already running solid-state in your storage arrays or server PCI-E? V-locity sits at the top of the technology stack at the Windows OS layer so the entire infrastructure—regardless of vendor—reaps the benefit of I/O optimization downstream. V-locity is proactive—meaning it prevents the surplus of unnecessary I/O from ever being created in the first place. This way, your SSD or HDD media isn’t dealing with the I/O mess after it has already wreaked havoc on your environment.

4. Benefit analysis. Unlike Diskeeper, V-locity comes with an embedded performance benchmark that allows users to see the before/after benefit of V-locity in their real-world environment and share the outcome with stakeholders prior to any kind of purchase commitment. This single-page report provides metrics like workload comparison, I/Os per second, latency, and more. 

For high-performance in environments that leverage advanced storage technologies, V-locity Server is the best bet to maximize your existing hardware investment and eliminate performance bottlenecks overnight.

A Blog About Bloggers Who Blog About Us

by Jerry Baldwin 7. February 2013 09:49

On contemplating the impact of his calculating engine, the world’s first computer, Charles Babbage wrote “In turning from the smaller instruments in frequent use to the larger and more important machines, the economy arising from the increase of velocity becomes more striking.” He said that in 1832.

I mention this because the idea holds true today—the bigness of everything, the immediacy of everything, the pace of everything—the greater the increase from one state to another, the more striking the difference. And that’s exactly why—when we put V-locity 4 trialware into the hands of virtualization wizards to test in their lairs—we want them to really, really put it through the wringer. The heavier the workload, the greater the application demand, the more striking the results.

Recently two virtualization pros got their hands on the V-locity 4 30-day trial, set up rigorous testing, and blogged the entire experience:

VMware technical architect amazed by V-locity 4 results

Another virtualization blogger amazed by V-locity 4

 

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Big Data | Hyper-V | IntelliMemory | virtualization | V-Locity | VMware

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