Welcome to the Diskeeper Blog

This blog will provide technical data and insights into performance and reliability issues surrounding file system performance. We hope to cover all topics related to system performance including defrag whether you are running SANs, NAS, workstations, servers, SSD's or other systems. We will provide interesting anecdotes, white papers, and related story topics on defragmentation and other performance issues. The blog is intended to be personal rather than a formal Diskeeper website. You will read personal viewpoints on our products and where we see the industry and our company going. We are excited to have this opportunity to share our product knowledge and insight, and hope this information helps you. We encourage your comments and look forward to you following this blog.

Inside IntelliWrite technology

by Michael 20. November 2009 07:10

Diskeeper 2010 is all about a revolutionary new technology called IntelliWrite. Never before has fragmentation prevention been a reality - until now.

So what does IntelliWrite really provide your systems?

To demonstrate this, we did some tests using two identical systems to measure how much fragmentation is prevented. In these tests, lower scores are better (means less fragments on the system).

IntelliWrite with Microsoft Office:

 

IntelliWrite on Microsoft SQL Server:

And how much faster your computer operates (Higher scores are better):

 

WOW. pretty awesome! Awesome is the word almost unamisouly applied to Diskeeper 2010 from beta testers and early adopters. 

Get the full scoop on IntelliWrite and see more test results in the new Diskeeper 2010 white paper: Inside Diskeeper 2010 with IntelliWrite.pdf (551.60 kb)

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Diskeeper

What if fragmentation never happened?

by Michael 19. November 2009 06:45

Diskeeper 2010 is here!

With Diskeeper 2010 comes a revolutionary new technology called IntelliWrite(tm). Here's a description I grabbed from one of our product brochures:

"IntelliWrite is a major R&D breakthrough that addresses the cause of fragmentation and prevents up to 85% and more of the fragmentation that has long plagued every hard disk. This technology is unavailable anywhere else, and nothing else comes close. IntelliWrite elevates system performance and efficiency to a whole new level. It keeps disks clean and fast by intelligently writing contiguous files to the disk. The benefits of IntelliWrite and the fast, efficient disk it enables go far beyond what defragmentation can achieve."

The benefits of IntelliWrite include: 

+ Peak system performance—every minute, every day

+ Faster file read and writes - any time, all the time

+ Zero impact on system resources

+ Eliminate data/file replication traffic (and subsequently storage processing/requirements) caused by technologies which monitor block level data access such as "snapshots" (common in SAN environments)

+ Reduced drive wear and tear / extended hardware life

+ Reduced energy costs

+ Faster return on investment (ROI)

OK, sounds too good to be true - what's the catch you ask? 

Well, there is a trade-off for proactively preventing fragmentation. The lone side effect is a slight increase in the use of free space (less than 1% increase). There is also a requirement that at least 2GB of free space exist on a volume, in order for IntelliWrite to operate.

Over the next few weeks, I'll provide more details about this technology and present some test data we've done, as well as tests done by beta testers and early adopters of this ground breaking technology. Very cool stuff...

In addition to IntelliWrite, Diskeeper 2010 also incorporates a number of other features/enhancements including:

  • Improved analysis/defrag reports that include free space fragmentation data
  • The Diskeeper service (DKservice.exe) start is delayed by default (for better system startup performance)
  • Enhancements to File Exclusion feature
  • Improved Health and Recommendation reports including:
    • Consistency across all recommendations and health assessments in the Job Reports and the Dashboard
    • Greater focus performance in the various reports (rather than fragments per file)
    • Removed MFT usage as a factor in warnings, etc...
  • Runs free space consolidation engines more frequently (relative to file defrag, given IntelliWrite largely eliminates the need for file defrag work)
  • No more volume size limits in Diskeeper Home/Professional editions
  • Home edition supported mow extended to include Windows 7 Professional
  • Microsoft Windows 7 compatible (formerly known as "certified")
  • Certification for Windows Server 2008 R2 coming in the next few weeks
  • Defragments $USNJRNL and $SECURE metadata online on Windows 7 / 2008R2

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Diskeeper Corp techies at PDC next week

by Michael 13. November 2009 06:16

Developers and technical executives from Diskeeper Corp will be attending Microsoft's Professional Developer Conference (PDC) next week in LA. If you'd like to meet up and ask us some questions or just talk technology, comment in this thread (leave us your email address) so we can coordinate a time to meet.

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The Essentials Series: Why You Need to Defragment

by Michael 9. November 2009 05:30

Greg Shields, a well known expert on Windows technologies and a contributing editor for TechNet Magazine, penned a three part e-book on defragmentation titled Why You Need to Defragment. Read it here.

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You CAN have your cake and eat it too

by Michael 30. October 2009 10:39

Diskeeper 2010 RTM'ed (Release To Manufacturing) earlier this week, so we celebrated with cake; a Diskeper cake in the image of the new DVD case that is. 

 

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General

Paradigm Shift

by Michael 27. October 2009 10:49

If you are a Diskeeper Maintenance customer, keep an eye open for an email from Diskeeper Corporation with some exciting news. Emails are going out this week through next.

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Undelete for Windows 7 / Server 2008r2 - more info

by Michael 26. October 2009 08:55

Our developers are currently working on updating Undelete 2009 to support Windows 7 and Windows Server 2008r2. We expect the update to be available in early-to-mid December 2009. If no major changes are required, it should release in the early part of that month. If we discover a need to make more significant changes to Undelete, we'll run a field test, and release sometime later that month.

I run Server 2008r2 as my main production system and have been running early versions of Undelete for several months - without experiencing any major issues. So, I'm optimistic we'll get this update out soon. 

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Later this month...

by Michael 7. October 2009 11:28

Almost here

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HyperBoot side-by-side comparison video

by Michael 6. October 2009 05:05

Computerworld just printed an article about our current and future HyperBoot releases. It includes a simple video we created. The video shows two identical brand new laptops with no changes, other than adding HyperBoot to one of them. They've been set, in a loop, to continually reboot - right after completing a startup. The video begins in "real time" and then fast forwards to show the continuing improvements.

Read the article and check out the video here.

PS: we have heard significant interest from corporations and home users alike for this product, and are increasing our efforts to make it available publicly.

 

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HyperBoot

New V-locity White Paper

by Michael 24. September 2009 08:26

Optimizing the disks of virtual platforms is an absolute must for performance. Typically even more so than on physical platforms.

Topix Technologies, an IT Analyst group out of Paris, France recent completed a study about the effects of fragmentation on the modern virtual infrastructure. They used V-locity to restore performance to the high service levels IT departments and providers are required to deliver. Check out the performance results in the chart below or read the full report here.

 

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V-Locity

Diskeeper 2010 "Beta" to start next week

by Michael 23. September 2009 11:22

We're looking for some current Diskeeper customers that are interested in getting a first look at a new technology breakthrough - in Diskeeper 2010. The beta test will start next week, and we have about 50 openings left that we need to fill.

If you are a current customer and are interested and able to install, evaluate and then comment (fill out a 5 minute online survey) on this software, all within a one week period, simply fill-out a Non-Disclosure Agreement (NDA) located here.

Fax the signed NDA to:
Fax: 818-252-5514

Please add the following to the Fax cover page:
Attn: Field Test Administrator/Sneak Peek Preview

Alternatively you can email the signed NDA (scan in the pages with your signature) to our Field Test administrator. Please add "Sneak Peek Field Test" in the subject line.

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Supporting Windows 7 (and Server 2008r2)

by Michael 9. September 2009 16:13

Diskeeper 2009 and HyperFast fully support Windows 7 and Windows Server 2008r2, and have since we released them back in December 2008. V-locity also fully supports the new Windows platforms.

That said, the next major release of Diskeeper (coming soon) will also take advantage of new functionality in Windows 7. Windows 7 allows for additional online metadata defrag, including $Extend  (think USN Journal here) and also $Secure.

This past year, we've also been engaged with Microsoft's Front Runner compatibility program. Microsoft  is going to great lengths to ensure the upgrade process (e.g. install Windows 7 upgrade over Vista) is seamless for their customers. Something I did not see with the Vista release, is the degree of involvement they have required from software vendors such as us, to ensure reliability and stability for users who take the upgrade path.

On to Undelete...

Undelete 2009 will support Windows 7 and Windows Server 2008R2 around the time that those new OS'es release to public (i.e. Oct 22nd). We'll post/email instructions for Undelete 2009 customers regarding how to get the new update when the software is available. All in all, supporting Windows 7 has not required significant code changes, but there's a great deal of quality control testing we always require before we can certify our software for release. 

As part of that testing process, a few weeks ago several of our senior developers were at Microsoft's bi-annual IFS PlugFest. PlugFest is a meeting of file system filter driver developers that we've been regularly attending for years. At this interoperability forum, we can test our solutions alongside those from other manufacturers. The perfect timing of this event allowed us to test the updated Undelete on the new Windows platforms with file system filter drivers from other vendors. We also had the opportunity to test some new, very advanced (but as yet unreleased) new technologies!

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Our thanks to the brave firefighters fighting the LA fires!

by Michael 8. September 2009 10:42

While the ongoing LA area fire is not a threat to the Diskeeper Corporation building, many of our employees live in the areas where the fire is a concern.

Here are a few pics taken this past weekend from the backyard of an employee who lives in the foothills of Angeles Crest:

Needless to say, he's incredibly grateful for the efforts of the firefighters saving thousands of homes in that area.

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Sneak Peek Testers needed

by Michael 27. August 2009 13:00

We're looking for some current Diskeeper customers that are interested in getting a first look at a new technology breakthrough. The preview will start in a few weeks and we have a few openings left that we need to fill.

We're eager to get this new technology on the market so this Sneak Peek Preview program will start and finish all within one week!

If you are a current customer and are interested and able to install, evaluate and then comment (fill out a 5 minute online survey) on this software, all within a one week period, simply fill-out a Non-Disclosure Agreement (NDA) located here.

Fax the signed NDA to:
Fax: 818-252-5514

Please add the following to the Fax cover page:
Attn: Field Test Administrator/Sneak Peek Preview

Alternatively you can email the signed NDA (scan in the pages with your signature) to our Field Test administrator. Please add "Sneak Peek Field Test" in the subject line.

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Removing Fragmentation? SOUNDS good to me

by Michael 25. August 2009 10:37

I found this Diskeeper Log interesting. One of our Account Managers recently installed voice recognition/dictation software (on August 19). If you follow the daily log reports, you can see the dramatic difference in the daily number of fragments eliminated. Diskeeper went from averaging 3000 fragments eliminated per day to 15,000!

Eliminating fragmentation to get the expected performance from voice recognition software programs is well documented. Here is one good report on the subject.

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WINstant On (i.e. "Instant on" for Windows)

by Michael 18. August 2009 06:49

We posted a press release today regarding a new software innovation called HyperBoot(tm). This is a major R&D project we've been working on for some time. HyperBoot is designed to do one thing - boot up (cold boot) an HDD-based Windows system in record time. The performance results of our development effort on this project are far better than we expected going in.  

We're very excited to begin our new HyperBoot technology partnerships with netbook pioneer ASUS. Initially this arrangement will cover all ASUS netbooks and laptops running Windows XP. We've also seen overwhelming interest from many more global OEM's for this new technology.

Additional HyperBoot variations support Windows 7 systems and other storage media. As you can imagine, the hardware and software contribute significantly to the boot up peformance of a given computer. That said, we've seen Win7 platforms that, after adding HyperBoot to it, boot in under 15 seconds.

More is coming...

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Press Release | HyperBoot

96% of something?

by Michael 14. August 2009 11:06

 

More future GUI charts with the "colonel's secret recipe" scratched out: 

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SAN defrag

by Michael 13. August 2009 03:01

Storage Area Networks (SANs) are becoming increasingly more common. A few years ago "SAN" was an acronym that rarely made it out of the lexicon of IT Storage Admins at 1000s+ employee multinationals. In more recent years the SAN IHV/ISVs have greatly simplified and reduced the installation, maintenance, technical effort, and acquisition costs. It's increasingly more common to see SANs in medium sized businesses. Many SAN providers have even offered targeted "mid-range" solutions often for those mid-sized organizations. EMC is one such vendor that targets just such a solution with their Clariion product line.

Microsoft has also been at the forefront of advancements in data storage centralization. Technologies like Storport (introduced in Windows Server 2003), iSCSI software initiator, multipath I/O storage stack, and more.

A great deal of innovative software from Microsoft and SAN vendors make the whole system work.

An important point to be aware of is where in the whole computer system, the SAN "plugs" in. A SAN is, in essence, a replacement for a single disk. In the Windows I/O storage stack a SAN solution replaces the disk driver (disk.sys), with its own drivers. Eventually data must reside on a physical storage device of some kind, so any request to read or write data will have to go through this disk driver, or SAN replacement thereof. However, before the I/O request gets to this lower level it goes through a local disk file system. When talking about Windows in a SAN, that local disk file system is pretty much always going to be NTFS. Fragmentation as Windows sees it and cares (same for Diskeeper), is at NTFS. So, if files are fragmented as NTFS sees it, the local disk file system has to send a great deal more I/O traffic into the SAN, causing the SAN to do more work that it should.

We have a very thorough white paper that covers defragmenting SAN. It also includes Best Practices for Diskeeper. Check it out here.

Even SAN vendors recommend defragmenting Windows. EMC includes a paragraph about the need for their Clariion family of products in a white paper here. In it (pg. 5) it says:

“File system fragmentation over time is almost inevitable. Performing defragmentation regularly keeps performance optimal. There are a number of host-based utilities that can perform defragmentation in place to accomplish this… (SnapView™, SAN Copy™ and LUN Migration will not defragment file systems)…” ... “Perform regular defragmentation of the file system to ensure optimal performance.”

 

The interesting part is they also note the SAN file system solutions they offer are NOT designed to handle NTFS fragmentation, and that they recommend to defragment that "local disk" file system. When we here at Diskeeper talk about the need to defrag SAN attached systems, were talking about doing what we always have done - defragging NTFS in Windows (from Windows). That is an important point as SANs also use a file system to organize data. Diskeeper, nor Windows defrag addresses this. "If" defrag of some kind is needed in this SAN file system it is handled by the SAN vendor - you can check with their support staff on that subject. Defragmenting NTFS and defrag of SAN file systems are two completely different subjects and should not be confused.

 

Even more reading:

Ziff Davis Enterprise (from the same parent company of eWeek) just released a paper on defragmenting SANs, including benefits and covering some considerations as well. You can read that here.

In summary, even with the tremendous amount of technology that has gone into SANs over the past decade, defragmenting SANs is still just as vital as defragmenting DAS (direct attached storage).

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SAN

Optimum file-write performance: Consolidating free space.

by Michael 7. August 2009 06:54

Early next week we'll publish a new white paper that covers 21 technical points to consider when evaluating a disk optimization solution. While it is focused on IT professionals evaluating Diskeeper for business desktops/laptops, many of the points apply to all users. Test results regarding one such universal consideration is provided below:

Often overlooked, but just as significant as file fragmentation, is free space fragmentation. Fragmented free space will inevitably increase the likelihood and degree of fragmentation of data and system files. Diskeeper has advanced solutions to consolidate space into a small handful of very large segments in order to improve future file-write performance.

Windows Disk Defragmenter (WDD) in Vista provides no option to consolidate file system free space. While tests demonstrate the number of free space segments is reduced after using WDD, a high number (7403 fragments) remain and the average free space segment size increases marginally.  Rather than increasing the size of the largest free space segment, (desirable) the free space segment was reduced from ~39GB to ~10GB.

Compared to the Windows 7 Disk Defragmenter, Diskeeper provided far superior results, eliminating free space fragmentation as a performance issue. Diskeeper grouped free space segments so as to create a much larger average size (measured in the GB) and created a 33+ GB ‘largest’ chunk size.  

While a free space defragmentation command line option has been introduced in Windows 7, test results show free space is less effectively defragmented than in the default mode. 

WDD provides a few command line parameters which allow it to apply different algorithms, each intended to solve fragmentation in various environments; such as ‘run free space consolidation mode.’ Diskeeper includes various, and numerous, defragmentation algorithms. However, at the core of the Diskeeper program is an advanced logic controller that, with a focus on how to best restore file system performance, automatically selects a special algorithm for a particular environment. There is never a need to manually analyze and make administrative decisions and then adjust operational parameters to run a different type of defrag task. If free space fragmentation is a performance issue, Diskeeper dynamically recognizes this and solves the problem without administrative intervention.

In summary, only Diskeeper provides a solution to consolidate free space, thereby preventing file-write performance degradation for future write activity on a given volume.

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the times they are a changin'

by Michael 6. August 2009 10:12

Here is a sample screenshot from an upcoming new Diskeeper release:

This graph works like the InvisiTasking graph (updates a measurement every second), but I can't tell you what it's measuring just yet (had to scratch that part out).

You won't have to wait much longer though...

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