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Newskeeper a diskeeper corporation publication Volume 4 | issue 20 WHEN THE BUILT-IN DEFRAGMENTER IS NOT ENOUGH PAGE 4 FEATURE ARTICLE ON-SITE PERFORMANCE REPORTS PAGE 8 TEST LAB RESULTS ON DISKEEPER PERFORMANCE GAINS PAGE 10 REAL-WORLD PERFORMANCE

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Page 1: Newskeeper Vol 4, Iss 20

Newskeepera diskeeper corporation publicationVo lu m e 4 | i ss u e 20

When the built-in defragmenter is not enough page 4

feature article

on-site performance reports page 8

test lab results on diskeeper performance gains page 10

REAL-WORLD PERFORMANCE

Page 2: Newskeeper Vol 4, Iss 20

in this issue

editorial 03 looking out the window

Feature article 04 when the built-in deFragmenter is not enough: what our customers say

08 diskeeper in the real world: on-site perFormance reports

10 how much system perFormance could you lose iF you only deFrag once a week?

11 product reView: V-locity 2

The Diskeeper Corporation has knowledgeable customer relations representatives available to answer your questions, give a custom ROI analysis of your system needs or provide quick, no-obligation quotes. Call direct: 800-829-6468 or send an email to [email protected].

TeCh SuppORT [email protected]

GeneRal InfORmaTIOn [email protected]

DISkeepeR CORpORaTIOn 7590 n. Glenoaks Blvd. Burbank, Ca 91504 uSa Tel 800.829.6468 faX 818.252.5514 diskeeper.com

DISkeepeR CORpORaTIOn euROpe Shaw house pegler Way, Suite 226 Crawley, West Sussex uk Rh11 7af Tel 011 44 (0) 1293 763 060 faX 011 44 (0) 1293 763 210 [email protected]

DISkeepeR CORpORaTIOn ChIna lImITeD 21/f, ICBC Tower Citibank plaza no.3 Garden Road, Central hong kong Tel 011 852 2273 5146 faX 011 852 2273 5999 [email protected]

Diskeeper Corporation, Innovators in Performance and

Reliability Technologies® founded in 1981, is a multinational

corporation with headquarters in Burbank, California, and

offices in Europe and China. The Diskeeper product line is

distributed widely across the globe.

Launched to an overwhelming success, Diskeeper Corporation

has sold over 39,000,000 licenses of its flagship product —

making it the most widely used automatic defragmenter

on Earth. In the United States alone, over 90% of the

Fortune 500 and thousands of enterprises and government

agencies rely on Diskeeper® performance software to provide

constant speed and reliability to their Windows-based

laptops, desktops and servers.

The only way to prevent fragmentation

before it occurs.™

Virtual Platform Disk Optimizer for VMware®

and Hyper-V™

Real-Time Protection. Real-Time Recovery.™

Fragmentation Prevention Technology.

Solid State Drive Optimizer for PCs.

Zero System Overhead Application Technology.

®

Page 3: Newskeeper Vol 4, Iss 20

FIELD TESTERS NEEDED.

Put yourself on the cutting edge of technology. Be among the fi rst to see the exciting new features and functionality of products before they are released to the public! Sign up to be a fi eld test site by sending an email request to fi [email protected].

e d i to r i a l

Prefer to receive Newskeeper by e-mail? Send me an e-mail at [email protected] to make the switch.

paperless newskeeper

When I was a kid, we didn’t have reality TV; we had windows and you looked out them at the real world. Knowing what works came about from hands-on experience. But today, evaluating data can seem overwhelming. So much data is available that a habit has arisen to accept summarized opinion over observable facts.

The problem, of course, is that everyone has an opinion and opinions can be skewed to special interests. What’s missing is knowledge and that comes from application and observation.

Diskeeper solves problems that would be devastating to an IT site if left unhandled. Diskeeper has gone through rigorous testing by respected testing institutions such as the National Software Testing Lab (NSTL). But more importantly, Diskeeper has been tested in real-world corporations and endorsed by some of the most critical IT managers and tightest margin-watching CFOs in existence.

Diskeeper is depended upon by many of the same corporations and government institutions that this country depends upon. Our benefi ts have to be grounded in demonstrable results.

This issue of Newskeeper begins a series of articles that outline how our performance management works in the real world and how to leverage it to bring out the full power and effi ciency of Microsoft’s operating systems.

Peter Mead, [email protected]

LOOKING OUT THE WINDOW

Vo lu m e 4 | i ss u e 20 3

A Diskeeper Corporation maintenance agreement on your volume license contract keeps your technology investment up to date with every cutting-edge innovation we release – automatically!

• Full software upgrades are free.• Get immediate website downloads of

new builds as soon as they’re released.• 100% transferrable when upgrading

machines or operating systems.• Eliminates repeated paperwork every

time you want an upgrade.• Saves you up to 50% over the cost of

a full upgrade without a maintenance agreement.

Your netWork

needs continue

to eVolVe.

make sure Your

performance solutions

do, too.

Contact us now for a special maintenance agreement discount at: www.diskeeper.com/maint

Page 4: Newskeeper Vol 4, Iss 20

4 n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n

When the built-indefragmenter is not enough:what our customers say.

fragmentation is serious, vigorous, relentless and extensive.

It cannot be put off to weekend defrag sessions or even nightly runs. Fragmentation accumulating during peak traffic times affects performance right then. Application reliability and broad incidents of misbehavior across the system will slow productivity when you need speed the most. Help Desk traffic increases. Because of system resource drain, the built-in defragmenter must be run off production hours.

Real-time defrag provides the best overall performance, but only if it is completely free of resource conflicts.

Per Microsoft, “By default, defragmentation is disabled on Windows Server 2008 R2 (the Windows 7 server release). Given the variability of server workloads, defragmentation should be enabled and scheduled only by an administrator who understands those workloads.”

Running the built-in consumes too many system resources to be viable when systems are active. Microsoft has attempted to solve this issue by pre-scheduling workstation operating systems to run at 1:00 AM on Wednesday, but this has its own issues. When systems are turned off, they don’t get defragmented. If too much fragmentation has accumulated, the defrag window may not be big enough. If the machine is in use, it will either slow

We’ve been studying hundreds of customer reports and testimonials and we’ve visited dozens of enterprise sites in our ongoing efforts to better understand what performance initiatives the corporate IT field needs. One thing that stands out is how adamant most of our customers are about the decision to use Diskeeper over the built-in defragmenter, especially during a time of tighter budgets.

Digging deeper, we found their decision was based on testing and application and boils down to seven conclusions. How do these points stack up against what you’ve experienced?

1 2

Page 5: Newskeeper Vol 4, Iss 20

low upfront costs can lead to excessive operating costs.

All of the customers we interviewed said that they couldn’t afford to run the “free” built-in defragmenter. Not only did it eat up IT staff admin time administering, but in real-world applications, it didn’t completely eliminate fragmentation. As a result, operating costs escalated.

Vo lu m e 4 | i ss u e 20 5

3

4

productivity to a crawl or defrag will be shut off for another week. Most importantly, speed rapidly declines between weekly defrag runs on the busiest systems – precisely the ones you need running fastest!

Servers must be manually scheduled for defragmen-tation and used for nothing else during defrag. This requires more manpower, additional time and in a cor-porate or government organization it is often impos-sible to predict when a system may be in use.

Diskeeper 2010 includes an important technical inno-vation, InvisiTasking® background processing technol-ogy. It allows real-time, robust fragmentation manage-ment using only idle system resources, even during peak production hours. It is so resource efficient that systems actually run faster while Diskeeper is active.

Studies carried out prove fragmentation builds up daily, and at a rapid pace.

“Even with weekly scheduled defrags, we decided the disk performance was unsatisfactory. We installed Diskeeper for its fragmentation prevention and continuous auto­matic defragmentation. We have seen a 45­50% performance enhancement in read access and a 60­65% in write speeds on these servers.

“The last issue we were having was with our Microsoft SQL servers that are several TBs in size. The exports/ imports and general performance of these servers were being severely affected by fragmentation. Again the built­in tools were just not up to the job. We have achieved better performance, reduced backup times and reduced export/ import times on these servers after Diskeeper was installed.”

– John Gann, System Administrator, American Imaging Management

Centralized site-wide performance management is critical to cost-effective ownership.

At large sites, the management of servers and workstations is often divided up amongst multiple IT groups. There is little unifying structure to site-wide defrag schedules. Changes in server and workstation production times, migrations, etc., can easily disrupt or cancel a defrag schedule. Too often, this results in no defragmentation at all and steadily increasing system instability.

The Diskeeper Administrator UI offers full centralized administration so IT can troubleshoot poor performing systems. The Windows 7 defragmenters cannot be used to determine the impact of fragmentation during a problem event. IT departments and service providers are often tasked with meeting particular service level agreements for uptime and performance. This can only be achieved by staying on top of the performance of all applications, processes and services that can affect service requirements. Fragmentation is the broadest problem that can affect the entire range of system activity. Only Diskeeper Administrator offers alerts and comprehensive centralized reports.

Page 6: Newskeeper Vol 4, Iss 20

6 n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n

Complete defragmentation produces better performance.

Diskeeper consolidates free space, significantly increasing write speed. It defrags metadata and system files (paging file and hibernation file, etc.), defrags disks that are 99% full and defrags large volumes over 100GB efficiently. None of this can be done by the built-in defragmenter.

Scores reflect a viable metric measuring the increased drive performance of one system to another.

Backup speeds are significantly faster with the complete defragmentation Diskeeper offers.

6a fragmentation solution must evolve with the times.

Things have changed. The functions and character-istics of applications have forced the rules of defrag-mentation to be rewritten. File sizes vary radically. Files are saved, copied, overwritten and extended at higher rates of frequency, heavily fragmenting both files and free space. Disk capacity has gotten larger but so have the file sizes that are written to it. Simple application updates can be in the hundreds of megabytes. Com-puter technologies form a collaborative dependency. Each one of them must keep up or face extinction.

In the 9 years since a built-in defragmenter was released in Windows XP, it has only really gained an ability to be run on fixed schedules. It is like a technology time capsule. Meanwhile the performance gap between the hard disk and the CPU continues to widen, almost exponentially. Disk size, I/O bandwidth and CPU speed increases grew

“The Windows built­in defrag tool wouldn’t even attempt to defrag the SQL database files because the disk space was down to 23%. It just ignored the problem every time I tried to run it manually. We were getting user complaints of poor performance for this application almost daily.”

— Bill Louth, Senior Systems Administrator, TSG Resources, Inc.

5

aRCServe Backup fragmented volume

Defragmented volume

Defrag mented volume (with Dir Con solidation)

Backup from Test Volume to Local Disk Backup Device

Time to backup test volume (hr:min:sec) 0:05:37 0:04:58 0:04:46

% decreased from fragmented case 11.57% 15.13%

Data transfer rate (MB/min) 2,168.74 2,452.57 2,555.48

% improvement over fragmented case 11.57% 15.13%

Backup from Test Volume to Network Disk Backup Device

Time to backup test volume (hr:min:sec) 0:16:46 0:16:18 0:09:24

% decreased from fragmented case 2.78% 43.94%

Data transfer rate (MB/min) 726.5 747.3 1,295.86

% improvement over fragmented case 2.78% 43.94%

Comparison of free space consolidation on Windows 7.

Baseline after Windows 7

after Diskeeper

Free space count 91440 18240 28

Average free space size

492 KB 2.47 MB 1.58 GB

Largest free space size

512 MB 509.76 MB 33.55 GB

Page 7: Newskeeper Vol 4, Iss 20

Vo lu m e 4 | i ss u e 20 7

enormously. In that same time, Diskeeper went through 10 major version upgrades, not only refining technology but also creating innovations so fundamental they established new standards for performance capability.

For example:

• InvisiTasking® invisible background processing enables real-time operation during peak traffic times with zero resource conflicts.

• IntelliWrite™ fragmentation prevention technology eliminates the resource waste that occurs from fragmenting files in the first place.

• Free space consolidation into very large segments to increase write speed and lessen the tendency for data and system files to fragment.

• V-locity™ virtual platform optimization.

• HyperFast® solid-state drive optimizer (an option in Diskeeper 2010).

• Performance optimization of SAN-attached servers.

• The ability to defrag drives with less than 1% free space.

• Titan Defrag Engine™ technology. Mission-critical enterprise server defrag engines capable of handling 20 TB volumes.

• Advanced centralized management and reports.

7fragmentation prevention means better performance integration and efficiency throughout a system.

Diskeeper 2010 is able to prevent up to 85% of all fragmentation before it happens, saving I/Os that would have been wasted fragmenting files. But the benefits go beyond this. Less I/Os for more productivity also reduces drive wear, energy expenditure/cooling, backup time and virus scan time. It also reduces a variety of misbehavior in applications that are often misidentified as version bugs. In a network of even medium size, these are significant cost savings.

Microsoft really got it right with the Windows 7 operating system but the capabilities of the built-in defragmenter seem on par with their other built-in tools such as WordPad, Paint, and backup – useful for casual home computing but not engineered for the corporate environment.

“The automatic defrag in Diskeeper is the biggest selling point for us. As we know, Windows performance degrades over time and, although scheduling a defrag with the built­in one is an option, we found that the performance was not as good, was of higher impact to the end user, and there is no central management.”

– Zach Groves, Network/Security Analyst, CenterPoint Properties

InvisiTasking graph depicting invisible operations.

Idle resources Idle resources used by InvisiTasking Resources used by system

97% of Diskeeper users state their computers last longer with Diskeeper installed.(186 Respondents)

Computers with Diskeeper Last Longer

Haven’t tried Diskeeper 2010 yet? Seeing is believing!

Download a full-feature 30-day trial now.

www.diskeeper.com/20b

Page 8: Newskeeper Vol 4, Iss 20

n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n8

Stable pCs and a lot less help Desk Traffi c

“Diskeeper 2010 keeps hard drives performing much better than they would using the built-in or other defrag methods.

“We currently use Diskeeper Professional, Server and the Administrator. We have Windows 2003 servers running services such as fi le servers, Citrix, SAP, Microsoft Exchange and Microsoft SharePoint. All these services have benefi ted from Diskeeper automatic defragmentation and IntelliWrite. All systems with Diskeeper installed have had performance increases and maintained these increases.

“With IntelliWrite the amount of automatic defragmentation has been reduced so the computer performance remains more stable.

“Since installing Diskeeper, I have seen a lot less tickets relating to blue screens or extremely poor performance due to corrupt fi les and extreme fragmentation. Also the users are generally happier about their computers because they don’t have to wait for so long for their computers to load or process tasks.”

— Robert Keegan, IT Support, Lynch Group

Diskeeper vs. the Built-In

“For many systems, the solution was running the built-in defrag utility; this solution required the workstation to be powered on overnight. Diskeeper corrects fragmentation problems automatically during our normal workday without our users noticing any sluggishness from fragmentation or from Diskeeper.”

— Jerry Burdette, Network Manager, Design South Professionals, Inc.

Page 9: Newskeeper Vol 4, Iss 20

Vo lu m e 4 | i ss u e 20 9

no more Worries about Server or Workstation Slowdowns

“My backup server is 12 terabytes, so using the built-in defrag was not possible; it would never fi nish. I had to fi nd something else to do it. I noticed on my backup server it took about 14 hours to back up the data for the week. I use disk-to-disk-to-tape once a week for backups. I try to keep about two months of live data on the disk, but each week a tape is made for offsite storage.

“After fi nding Diskeeper, I have saved so much time. I don’t have to do it anymore manually. And I don’t have to worry about any server or workstation slowdowns. This also freed up my weekends!

“The 12-TB backup server is totally defragmented. It has 15 one-terabyte drives. The 14 hours for backing up the nine servers went down to 10 hours

– a noticeable difference in using Diskeeper.

“After that I was hooked on Diskeeper. Hard drives last longer when they are defragmented. They don’t have to work so hard to fi nd the data, so the I/O is much faster. Now it’s almost like ‘Set It and Forget It’ when using Diskeeper.

“The Diskeeper Administrator tool is great. You can set it up on a workstation (XP, Windows 7) and then deploy everything to the workstations and servers from there. Any updates can be pushed as well, and all of this can be done without rebooting everything. I would recommend Diskeeper to anyone. Now with the new version, most of the fi les are defragmented before they are written to the hard drive. It’s just a sweet product, and it is totally not that expensive; it actually pays for itself. Believe me, once you start using Diskeeper, you’ll never use anything else.”

— Dusty Bailey, Network Engineer, Z Capital Partners

Weekly Defrag Doesn’t Cut It“The 100 or so IIS servers we installed Diskeeper on were having a lot of performance issues due to a lot of very large log and temp fi les. The continual write and delete nature of these fi les kept the drives very fragmented. Even with weekly scheduled defrags, we decided the disk performance was unsatisfactory. We installed Diskeeper for its fragmentation prevention and continuous automatic defragmentation. We have seen a 45–50% performance enhancement in read access and a 60–65% in write access on these servers.

“We had several large fi le servers that by their nature are continuously being written or read from. They averaged around 1.5 to 2 TB of data. We were having issues with backups on these servers. We were also aware of fragmentation of the disks, but the built-in tools just could not keep up. User access complaints were not a large issue, but were an ever-present ticket in our queue. After installing Diskeeper, backup times were reduced by several hours, and user ‘slowness’ complaints went away.

“The last issue we were having was with our Microsoft SQL servers that are several TBs in size. The exports/imports and general performance of these servers were being severely affected by fragmentation. Again the built-in tools were just not up to the job. We have achieved better performance, reduced backup times and reduced export/import times on these servers after Diskeeper was installed.”

— John Gann, System Administrator, American Imaging Management

Page 10: Newskeeper Vol 4, Iss 20

10 n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n

real-world testing:

How much system performance could you lose if you only defrag once a week?Is once a week defrag even remotely viable as a performance solution? We wanted to measure the performance impact such a schedule would have if implemented. In order to make the test as realistic as possible, we collected data from our customers and field testers on how much fragmentation is created on a typical system during a normal weekly workload with no interim defragmentation or fragmentation prevention.

The results that most closely reflected the activity of a corporate system indicated around 5,000 new fragments created daily.

We created a script that reflected typical computer activities performed by a majority of computer users: writing and edit-ing MS Office files, web browsing, copying audio, video, and image files, etc. The script used a simulation of the weekly workload on the system. We measured system performance after running the workload script. Then, the same script was run on an identical system with an identical initial volume state with Diskeeper 2010.

Even on a small corporate site of five servers and 20 workstations, the performance difference is significant.

COnCluSIOn: The above testing shows that, on the average, over 60% performance is lost with once a week defragmentation. Who can afford that? Diskeeper improves overall performance by at least that much and does so every minute the system is active.

test 1 – readfile on a folder with word documents:

with diskeeper: 30,070.6 msec

no diskeeper: 62,025.6 msec

52% access time reduction

test 2 – readfile on a folder with excel documents:

with diskeeper: 219.0 msec

no diskeeper: 412.4 msec

47% access time reduction

test 3 – readfile on a folder with Notepad files:

with diskeeper: 150,534.8 msec

no diskeeper: 423,393.0 msec

64% access time reduction

test 4 – readfile on a folder with wordpad files:

with diskeeper: 157,831.6 msec

no diskeeper: 397,147.8 msec

60% access time reduction

test 5 – readfile on the most fragmented file:

with diskeeper: 122.4 msec

no diskeeper: 625.2 msec

80% access time reduction

test 6 – copy file test on data folders with documents, pictures, and video files:

with diskeeper: 16 minutes

no diskeeper: 32 minutes

50% reduction in file copy time

test 7 – Virus scan of a word document folder:

with diskeeper: 4.5 sec

no diskeeper: 7.5 sec

40% reduction in virus scan time

test 8 – Virus scan of a Notepad file folder:

with diskeeper: 41.2 sec

no diskeeper: 45.8 sec

10% reduction in virus scan time

Page 11: Newskeeper Vol 4, Iss 20

Vo lu m e 4 | i ss u e 20 11

ProduCt reView:

Brian Posey recently wrote a product

review of V-locity 2 for Redmond magazine,

the independent voice of the Microsoft IT

community. Mr. Posey, MCSE, is a Microsoft

MVP and co-founder and vice president

of research at Relevant Technologies,

which specializes in IT best practices and

information security.

The following is an excerpt from that review:

installationUnlike many of the products I’ve been reviewing lately, the installation process for V-locity 2 was a breeze. The main installation screen provides options for deploying both host and guest components. Upon making your selection, setup guides you through a simple wizard that helps you to complete the installation process.

See Figure 1.

Page 12: Newskeeper Vol 4, Iss 20

12 n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n

The only aspect of the setup process that I had some trouble with was the process of licensing my software, but I have to confess this was my own fault. Whenever I review a product, I initially try to install and use the product without fi rst reading the documentation. I do this as a way of determining how intuitive the software is. Although the software’s licensing process wasn’t intuitive, the documentation clearly explained it.

the V-locity 2 PhilosophyHow does Diskeeper suffi ciently differentiate itself from the defragmentation mechanisms that are built into Windows? After spending some time with V-locity 2, I realized that Diskeeper has defi nitely found its niche. To understand why, it’s necessary to put the nature of server virtualization into context.

Server virtualization is based on the premise that server hardware resources are almost always underutilized. Server virtualization products such as VMware ESX and Microsoft Hyper-V allow hardware resources to be used more thoroughly by allowing multiple virtual servers to make use of a single physical server.

Although server virtualization certainly has its benefi ts, it only works as long as the host server and each guest server have access to suffi cient hardware resources. Thankfully, most of the server virtualization products on the market allow you to allocate specifi c memory, CPU and disk resources to each individual virtual machine (VM). This does not, however, entirely prevent resource contention from becoming an issue. There are some resources that simply can’t be allocated — at least not in the traditional manner.

One such resource is disk input/output (I/O). Imagine, for instance, that you have one large storage array containing the virtual hard drives for each of fi ve different virtual servers. Although disk space might not be an issue, disk I/O is. In other words, a virtual server can only perform read and write operations on the storage array when the array isn’t busy. If a VM is performing a read or a write operation, all of the other VMs must wait for the operation to complete before they can access the array. When you also consider that disk-based storage is usually a server’s slowest hardware component, it becomes obvious as to why it’s critical that your virtual servers use disk resources as effi ciently as possible.

One of the best ways to improve the effi ciency of hard-disk access is to keep the disk defragmented. However, the defragmentation process can be a challenge in a virtualized environment. The defragmentation process

Figure 1. The main V-locity 2 setup screen.

ReDmOnD RaTInG

Installation: 20% 9.0

features: 20% 10.0

ease of use: 20% 10.0

administration: 20% 8.0

Documentation: 20% 9.0

Overall Rating: 9.2

key: 1: Virtually inoperable or nonexistent. 5: Average, performs adequately. 10: Exceptional

p r o d u ct r eV i ew

Page 13: Newskeeper Vol 4, Iss 20

Vo lu m e 4 | i ss u e 20 13

Figure 2. This system has IntelliWrite enabled.

itself tends to be very disk-intensive. Even though the system might run more effi ciently once a defragmentation completes, the defragmentation process itself can slow the system to a crawl while it’s running.

Diskeeper came up with an ingenious solution to this problem: It designed V-locity 2 in a way that prevents disk fragmentation from occurring in the fi rst place. V-locity 2 uses a technology that Diskeeper calls IntelliWrite to prevent up to 85 percent of all fragmentation. It does this by ensuring that fi les are written to the disk in a contiguous manner whenever possible. Because fi les are written contiguously, I/O operations require fewer movements of the drive heads, resulting in improved performance.

See Figure 2

A side effect worth mentioning is that when scheduled defragmentation operations do occur, they should complete much more quickly because the drives should contain very little fragmentation.

When the people at Diskeeper told me that V-locity 2 was designed to prevent fragmentation from occurring in the fi rst place, I expressed concern about the amount of system overhead consumed by IntelliWrite. However,

Diskeeper Corporation performance solutions produce maximum benefi ts across a network.

Our volume license discounts make it easy to put Diskeeper 2010, V-locity 2 and Undelete 2009 technology on every system they were designed for – and return your investment fast!

Get a volume license quote now at: diskeeper.com/20

Page 14: Newskeeper Vol 4, Iss 20

I learned that V-locity 2 uses a technology called InvisiTasking to help with this.

InvisiTasking is a proprietary Diskeeper technology that monitors the hypervisor to see what hardware resources are being used at a given moment. By doing so, it’s able to coordinate the defragmentation process for the host server and for the individual VMs in a way that prevents them from disrupting more critical system processes. Essentially, InvisiTasking makes use of CPU and disk I/O resources that would have otherwise been unused.

.VHd CompressionThe on-the-fl y decompression alone makes V-locity 2 a great product, but there’s another feature that will be of tremendous benefi t to organizations running Microsoft Hyper-V.

Anytime you create a VM, Hyper-V will confi gure it to use a dynamically expanding virtual hard disk unless you specifi cally tell it to use a fi xed-size virtual hard disk. Many IT professionals prefer to use dynamically expanding drives for two reasons.

First, dynamically expanding drives grow with your data. Second, dynamically expanding hard drives can be created instantly, whereas it can take hours to create a fi xed-size virtual hard drive.

As great as dynamically expanding virtual hard drives are, however, there’s one major disadvantage to using them: They grow as you add data to them, but the underlying .VHD fi les don’t shrink when you remove data. V-locity contains a feature that can reclaim hard disk space by compacting .VHD fi les containing unused space. It identifi es which drives are available for compacting and provides a recommendation of whether or not the drive should be compacted.

Although this feature seems to do a good job, .VHD fi les can only be compacted when they’re not being used. Therefore, you’ll have to shut down your VMs before compacting the underlying .VHD fi les.

See Figure 3

All in all, I found V-locity to be a solid product. I was very impressed with its feature set. V-locity should be considered an essential for anyone operating virtual servers in a Hyper-V environment. Unfortunately, I was unable to test the ESX version, but I have no reason to suspect it would be any less impressive.

14 n ews k e e p e r • a d i s k e e p e r co r p o rat i o n p u b l i cat i o n

GeT a nO-OBlIGaTIOn VOlume lICenSe QuOTe nOW aT:

diskeeper.com/20

Figure 3. V-locity 2 is able to compact .VHD fi les.

p r o d u ct r eV i ew

Page 15: Newskeeper Vol 4, Iss 20

use a free defragmenter–pay the hidden price!

Combine the power of windows® with the best-selling microsoft® certified solution for fragmentation—

8 reasons our customers stopped relying on a free defragmenter:• Incomplete. Can’t get the job done.

• Won’t defrag free space.

• Resource intensive. Can’t be run when the system is active.

• Servers? It can’t keep up with them.

• Hangs up on big disks. You never know what the progress is.

• Eats up IT admin time administering.

• Takes forever. May never finish.

• Effects of fragmentation still not eliminated!

inefficient defragmentation means higher help desk traffic, more energy consumption, shorter hardware life, less time to achieve proactive it goals, and throughput bottlenecks on key consolidation economies such as virtualization.

7 reasons our customers installed diskeeper® 2010 performance technology on every laptop, workstation and server:• Proven to increase system speed, reduce

downtime, lower energy consumption and extend disk life.

• Prevents up to 85% of all fragmentation before it can happen. eliminates the rest automatically.

• Zero resource conflicts even during peak traffic times.

• Fast. Fast. Fast. Completely automatic.

• Handles even the largest, most mission-critical servers quickly.

• Administrator console provides full management and reports for entire installed base.

• Lowers the cost of ownership.

Find out how affordable it is to roll out Diskeeper 2010 across your entire network! Get a volume license quote now at: diskeeper.com/20 or call us: 800-829-6468

diskeeper® performance technology.

Page 16: Newskeeper Vol 4, Iss 20

7590 n. Glenoaks Blvd. Burbank, Ca 91504 uSa diskeeper.com 800.829.6468

Innovators in Performance and Reliability Technologies

©2010 Diskeeper Corporation. All Rights Reserved. The Diskeeper Corporation logo; Innovators in Performance and Reliability Technologies; Diskeeper; The only way to prevent fragmentation before it occurs; Undelete; Real-Time Protection; Real-Time Recovery; Invisitasking; IntelliWrite; HyperFast; V-locity and I-FAAST are trademarks and /or registered trademarks owned by Diskeeper Corporation in the United States and/or other countries. All other trademarks and brand names are the property of their respective owners.

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sPeCial release PriCing

Call us for a special release pricing quote: (800) 829-6468 or get a custom quote at: diskeeper.com/v2special

NEW V-locity 2 revolutionizes virtual platform optimization and we want all of our Diskeeper customers to benefit. We’ve made it simple and cost-effective for you to put V-locity on all your virtual servers as either a new license or as a migration from existing Diskeeper licenses.