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.

SPECIAL ANNOUNCEMENT FROM OUR CEO: DISKEEPER IS NOW CONDUSIV

by Jerry Baldwin 5. March 2012 04:13

Dear Diskeeper customers and friends,

Shortly after being appointed CEO of Diskeeper, in September 2011, I realized that I had inherited a very talented team with deep engineering expertise and a strong desire to develop thought-leading, high-performance software and products that would have extremely positive and measurable impact on our customers’ business.

We are a very different organization today than we were when the company was founded in 1981. Adopting a new name and brand identity is the logical next step in our growth strategy. As a result, we will cease operating under the name Diskeeper Corporation on March 4, 2012.

Going forward, Diskeeper Corporation will be known as Condusiv Technologies. The name change follows 31 years of successful business, but with a new mission to connect customers and partners, technology and people with the benefits of optimized efficient growth, fast thinking and change.

Condusiv expresses what we have become as an organization as well as what we hope to be — a highly focused company that transcends the boundaries of traditional solutions with innovative products that dramatically improve productivity.

We also want to take this time to introduce Undelete®10, the new release of our real-time file-protection product with Instant Recovery. We will also be launching an aggressive global rebranding campaign to reinforce our mission and introduce our new brand to the public at large.

I want to thank you for your business and loyalty. Every one of us at Condusiv looks forward to doing all that we can do to help you and your business improve and succeed.

Sincerely,

Jerry Baldwin

CEO, Condusiv Technologies

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Evaluating IntelliWrite In Your Environment

by Damian 1. March 2012 10:18

IntelliWrite technology has been around for about two years now, optimizing literally millions of systems worldwide. It seamlessly integrates with Windows, delivering optimized writes upon initial I/O (no need for additional, after-the-fact file movement). What does that translate to? Actual fragmentation prevention.

Interestingly, we do occasionally get asked how it bears up against modern storage technologies:

“Don’t the latest SANs optimize themselves?”

“Do I really need this on my VMs? They aren’t physical hard drives, you realize…”

Or even…

“I don’t need to defragment my SAN-hosted VMs.”

Now, there are some factors which must be considered when you’re looking at optimizing I/O in your infrastructure:

  • I/O from Windows is just abstracted Reads and Writes from a higher layer, even directly over a bare metal disk.
  • Due to the way current Windows file systems are structured, I/O can be greatly constrained by file fragmentation—no matter what storage lies underneath it.
  • Fragmentation in Windows means more I/O requests from Windows—even if files are stored perfectly contiguously at the SAN level, Windows still has to send X amount of requests because of the fragmentation that it sees within its top level.
  • File fragmentation is not the same as block-level (read: SAN-level) fragmentation. Many SAN utilities resolve issues of block-level fragmentation admirably; these do not address file fragmentation.
  • Finally, and as noted above, IntelliWrite prevents fragmentation in real time by improving Windows “Best Fit” file write logic. This means solving file fragmentation issues with no additional writes which could create issues with SAN de-dup or various copy-on-write data redundancy measures.

We performed testing with a customer recently in order to validate the benefits of IntelliWrite over cutting-edge storage. This customer’s SAN array is less than a year old, and while we don’t want to go into specifics in order to avoid seeming partial, it’s from one of today’s leading SAN vendors.

Testing involved apples to apples comparison on a production VM hosted over the SAN. A non-random workload was generated 3 times, recording Windows-level file fragmentation, several PerfMon metrics, and time to complete the workload. The test was then repeated 3 times, now with IntelliWrite enabled on the same VM’s test volume.

Here were the results:

 

 

The breakdown:

Fragmentation reduction with IntelliWrite: 89%

Split IO/sec reduction with IntelliWrite: 81%

Avg. Disk Queue Length reduction with IntelliWrite: 71%

…and with the improvement to these disk performance metrics, the overall time to complete the same actual file operations was reduced by: 48%

The conclusion? If you were asking the same sorts of questions posed earlier, evaluate IntelliWrite for yourself. Remember, the graphs above are on contemporary storage hardware—the older your storage equipment, the greater the improvement in application performance you can expect from investing in optimization. Can you afford to not be seeing maximum performance numbers out of your infrastructure and application investments?

The evaluation is quick and fully transparent. Call today to speak with a representative about evaluating Diskeeper or V-locity in your environment.

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Diskeeper | IntelliWrite | SAN | V-Locity

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