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.

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.

Tags: , ,

Diskeeper | IntelliWrite | SAN | V-Locity

Webinar: Physical vs. Virtual Bottlenecks: What You Really Need To Know

by Damian 20. February 2012 07:05

Diskeeper Corporation recently delivered a live webinar hosted by Ziff Davis Enterprise. The principle topics covered were:

  • Measuring performance loss in Windows over SAN
  • Identifying client-side performance bottlenecks in private clouds
  • Expanding performance awareness to the client level
  • The greatest and often-overlooked performance issue in a virtual ecosystem

The webinar was co-hosted by:

  • Stephen Deming, Microsoft Partner Solution Advisor
  • Damian Giannunzio, Diskeeper Corporation Field Sales & Application Engineer

Don't miss out on this critical data! If you missed the webinar, you can view the recorded version online here.

Here are some additional, relevant resources:

White Paper: Diskeeper 2011: Improving the Performance of SAN Storage

White Paper: Increasing Efficiency in the IT Environment

White Paper: Inside Diskeeper 2011 with IntelliWrite

White Paper: Running Diskeeper and V-locity on SAN Devices 

Diskeeper Corporation at Interop New York 2011

by Damian 10. October 2011 02:59

We’ve just returned from the Interop Expo in New York, and what a show! The recent release of V-locity® 3 was extremely well received and interest in its innovations was very high. The Diskeeper Corporation booth was constantly attended by groups of CIOs and storage administrators eager to hear about the benefits of the new virtual platform optimizer.

The lion’s share of energy and buzz at the show surrounded virtualization and cloud computing. Leading vendors across these markets as well as storage, networking, and information security exhibited for large groups of virtual admins and IT executives. Shows like Interop are critical for decision makers to stay apprised of the ever-evolving IT infrastructure landscape, and excellent opportunities to get educated about what is truly needed to grow and maintain a virtual environment that runs on all engines for them.

In addition to being asked by numerous IT analysts about the innovations underlying the incredible advantages of V-locity 3, I was interviewed by TMC (Technology Marketing Corporation) about it.

The need to meet higher Service Level Agreements and reduce Total Cost of Ownership for shared storage have reached a new plateau in virtualized networks and private clouds—what V-locity 3 does best.

If you’re reading this and you were at the event, we’d love to hear about your experiences at Interop this year.

Diskeeper Corporation will be exhibiting at the Gartner Symposium in Orlando, FL next week. If you’re planning on attending this IT Expo, stop by the booth to hear firsthand about how V-locity 3 is improving virtual systems in a whole new way.

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Events | virtualization | V-Locity

New V-locity 3 Virtual Platform Disk Optimizer Released at VMworld

by Colleen Toumayan 31. August 2011 02:20

Cures Pains from I/O Bottlenecks, Slow VMs, Slow Migration, Resource Conflicts, 

Wasted Storage Space and Slow Backup Speeds

Diskeeper Corporation announced at VMworld the release of new V-locity® 3 virtual platform disk optimizer for VMware®

V-locity 3 delivers invisible background optimization to give maximum I/O performance on virtual servers. 

V-locity 3 now has full integration with VMware ESXi as well as existing support for other platforms such as ESX, and Microsoft Hyper-V™. Other developments include V-Aware™ technology which detects external resource usage from other virtual machines on the virtual platform and eliminates resource contention that would otherwise exist on the same Host Server. New CogniSAN™ technology detects external resource usage within a shared storage system, such as a SAN, and allows for transparent optimization by never competing for resources utilized by other VMs over the same storage infrastructure. CogniSAN does this without intruding in any way into SAN-layer operations. Lastly is the new automatic zeroing of free space which is a powerful engine that zeros out unused data blocks on virtual disks and makes virtual disk compaction easy.

http://www.diskeeper.com/press/releases/releases.aspx?F=2011083001.htm

Tags:

virtualization | virtualization | V-Locity | V-Locity

Two Benefits of V-locity on Virtual Platforms

by karen 16. August 2011 03:36

A major concern with virtual guest operating systems in a virtualized environment is the possible resource contention introduced as each virtual guest operates independent of the others.

With respect to storage, Diskeeper Corporation’s V-locity 3.0 virtual platform disk optimizer mitigates over-utilization in two ways:

First, each V-locity Guest installation coordinates resource scheduling with a centrally installed V-locity Host Agent.  These guests automatically discover the V-locity Host Agent following installation. Once connected together in this fashion, V-locity Guests cooperate to complete each of their defragmentation tasks in a manner most efficient to the virtual server's resources as a whole.  

Second, the automatic zeroing of free space feature ensures that unused space on virtual drives is zeroed out and compacted in such a way that when a virtual guest is migrated to a different virtual server via VMotion, only the allocated data is transferred.  This speeds up the VMotion process and decreases the load on the shared storage subsystem.

RainWorx specializes in Online Auction Software.  Our hosted web sites are mostly our Auction Software customers.  As such, every auction listing (for each customer, on each server) has one or more images associated, so we have a very high volume of images being uploaded which could potentially create a lot of fragmentation.

Bill Moller

RainWorx

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Success Stories | V-Locity

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