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Storage for Virtual Environments Storage for Virtual Environments Document Transcript

  • E-Guide Storage for Virtual Environments Storage virtualization is still a fairly new technology, but it is gradually gaining prominence in data centers across businesses of all sizes. Although the potential for storage virtualization and the benefits it delivers are great, there is still some confusion in the market about what it can do and what it is all about. While this technology continues to gain momentum, it is important to have a solid grasp on the concepts of storage virtualization and how it is rapidly changing the way storage is managed. This E-Guide, featuring articles from SearchStorage.com and SearchServerVirtualization.com, provides a complete outline of storage virtualization and other virtualization techniques, including: • Virtualization Trends in 2007 • Integrating Storage and Server Virtualization • Disaster Recovery Options for VMware users • Five Tips for Understanding Virtualization • The VMware and NetApp Integration Sponsored By:
  • Storage for Virtual Environments Table of Contents E-Guide Storage for Virtual Environments Table of Contents: The Virtual Machinist: Virtualization trends in 2007 Top five tips for understanding virtualization Integrating storage and server virtualization VMware users explore disaster recovery options VMware and NetApp in cahoots? Resources from Insight Sponsored by: Page 2 of 16
  • Storage for Virtual Environments The Virtual Machinist: Virtualization trends in 2007 The Virtual Machinist: Virtualization trends in 2007 By Alessandro Perilli Today what we call server virtualization is a compelling technology, quickly pervading worldwide data centers with the promise of cost-savings and more efficient management. While this is true, there are a lot of factors which concurrently reduce the benefits of server virtualization: high starting costs for hardware, complexity and discrepancies in software licensing, lack of support, lack of experienced professionals and training and lack of tools able to address long-term issues. Server virtualization is a revolutionary technology, for sure, but it's still very immature in several aspects. I think the shortcomings listed above will drive future market trends. First of all SANs (Storage Area Networks) will become a mandatory companion for virtualization, obliging even smaller companies to purchase network storage equipment. Some, however, will fall back to cheaper Network Attached Storage, but only for very small projects. To reduce costs and be ready to scale up, cheaper iSCSI models with modular architectures will be the preferred choice. At the same time virtualization will drive sales of high-density multi-core CPUs, which leads to higher consolidation ratios. A single eight-core host will easily accommodate 32 virtual machines on average, which is more than enough to build a complete datacenter for many SMBs. Get ready for overkill: Intel is working on an 80-core prototype, available in production within five years. In this scenario of rapid advances, hardware will more redundant and reliable than ever, obliging customers to buy more expensive hosts with each physical component doubled, including motherboard and CPU. Looking beyond the hardware scene, this year vendors will start to satisfy a moderate demand for enhanced disas- ter recovery capabilities in virtualization platforms. This is good news for those running enterprise data centers with severe high-availability requirements. In the coming year, more and more companies will want traditional IT solutions to be supported in virtualization scenarios. Also, demand for application virtualization solutions will increase. These changes will bring demands for software houses to reconsider their support and licensing models and will push the evolution of licenses onto yet another new path. I think that usage tracking of physical resources is the best way to go. Anyway, changing licensing models will take lot of time, and there is almost no chance for a neat, new model to appear this year. Sponsored by: Page 3 of 16
  • Storage for Virtual Environments The Virtual Machinist: Virtualization trends in 2007 Going further on software side, the most compelling issue customers will face will be management of hundreds, even thousands of virtual machines (VMs). Already, some vendors are offering data center automation tools to streamline VM management. Those first out of the gate with products have a chance to be very successful, espe- cially later in 2007 when VM sprawl begins to be a problem for early adopters. Expect to see introductions of many virtualization management tools this year. All in all, server virtualization is a technology doomed to success. Look for excitement on the client side. Application virtualization market will start growing in the second half of the year, after Microsoft, Citrix and Symantec will attempt to streamline application distribution by tweaking and regurgitating products acquired during 2006. Sponsored by: Page 4 of 16
  • Storage for Virtual Environments Top five tips for understanding virtualization Top five tips for understanding virtualization By Jack Loftus Virtualization is a hot trend, but that doesn't mean every IT shop has to jump on the bandwagon just yet. There are some shops that just won't need this technology no matter how big the hype becomes this year. For those shops that decide virtualization is the right move for them, there has to be a complete understanding of existing resources, hardware and applications before they take action. A well-virtualized data center is a well-educated data center, and these top tips, provided by U.K.-based C&C Technology Consulting's practice leader Shane Colombo, put users well on their way to understanding how this technology could work best for them. 1. Understand your infrastructure. Before you make a decision about virtualization, it is imperative to learn about your shop's existing infrastructure. This includes the numbers and types of servers, operating systems, CPU and memory utilization, application names and versions. "Without a thorough understanding of these components, it would be difficult to understand how virtualization technologies could best be used within your organization," Colombo said. 2. Don't virtualize everything. Although virtualization is a flexible technology and can bring benefits to a wide variety of environments, it is not the answer for everything. Operating system virtualization provides the most benefit when it replaces a physical server that is underutilized. As an example, Colombo cited a server running Active Directory that is using a small percentage of its processing power. "[This situation] is therefore ideal for virtualization," he said. 3. Understand your administration model. Virtualization brings a new style of administration that may impact the existing processes within an organization. Realize that existing server teams with provisioning responsibilities could have to adapt to this new model in order to create new virtual servers. 4. Understand the applications you have. "Before virtualizing any applications, it is best practice to under- stand exactly what applications are included in the estate, what versions they are currently using and how they work," Colombo said. When you have a complete understanding of your applications, you'll be able to make the best decisions when considering virtualizing those applications. 5. Make capacity planning decisions. Understanding the infrastructure that will be used to virtualize an environment is a mustçespecially the specification and capacity of the chosen systems. If you do it incorrectly, then the solution you choose may not provide the expected performance and service levels. Also, with open source applications—especially with virtualization on a Linux platform—there is a vast com- munity of users who can help you understand the various virtualization technologies present today. Sponsored by: Page 5 of 16
  • Insight Integrated Systems (Insight IS), a division of Insight Investments, Corp., delivers high quality information-centric business solutions and services leveraging people, processes and technology. We enable our clients to maximize the return on their technology investments while maintaining close alignment with their entire business strategy. At the same time, Insight reduces technology risk; optimizes capital expenditure; provides timely market intelligence and advice; offers smart refresh and migration options, and upgrade alternatives. 600 City Parkway West, 5th Floor Orange, CA 92868 (714) 939-2300 For cutting-edge and cost-effective storage solutions, contact www.insightintegrated.com Insight Integrated Systems for a needs based analysis. Additional information about our technology solutions and services is available online at www.insightintegrated.com
  • Storage for Virtual Environments Integrating storage and server virtualization Integrating storage and server virtualization By Rick Cook What you will learn about virtualization: Knowing your storage and server hardware and checking its compati- bility is a critical step in integrating virtual servers and virtual storage. This tip offers practical advice for integrating virtualization products. Storage virtualization remains a fairly new technology, and Windows server virtualization is even newer, yet it's tak- ing time to make sure both kinds of virtualization can play well together. But, this is happening. Increasingly over time, if you encounter problems regarding their compatibility, those issues are likely to involve poor performance rather than complete failure. To ensure adequate performance, it is important to fully understand both the server and storage virtualization products you are attempting to integrate. Of course, you've got to know what you're virtualizing. One of the first steps in any virtualization project, whether it's storage or server and especially both, is to conduct an inventory of the servers, storage devices and such that will be involved. This includes things such as the host bus adapters (HBA) and storage area network (SAN) switches, and the software and firmware revisions. Check the hardware compatibility lists (HCL) for both virtualization products and make sure your configuration con- forms. This is getting easier as virtualization vendors work to make their products interoperable. For example, VMware Inc., now owned by EMC Corp., is aggressively promoting its VMware Infrastructure 3, which ties VMware's ESX Server 3 and related products with storage virtualization, and associated hardware and software. Recently, both Emulex Corp. and QLogic Corp. announced that they now have HBAs that are supported by VMware's architecture. It takes some additional steps to integrate virtual servers and virtual storage. (For one example, see this study, which was conducted to determine if using virtual storage in virtual server environments makes sense.) It's best to start by virtualizing the lightly loaded servers, both for cost-benefit and performance reasons. If you have, say, three servers and each has less than 30% utilization, you'll see more immediate economic benefits by virtualizing them all on one server than if you start with heavily loaded servers running high-intensity applications. Also, your operation will take less of a hit while you iron out any performance problems than if you were trying to start with the heavily loaded server. Performance issues The surprising thing about modern virtualization is how little overhead it adds, but it still increases cost in terms of time, performance and capacity. Of course, this added cost is well worth it if you see benefits. However, you need to keep track of costs. That means you need to monitor the system's underlying performance with tools, such as Iometer and vendor-specific tools. Sponsored by: Page 7 of 16
  • Storage for Virtual Environments Integrating storage and server virtualization There are some kinds of storage you don't want to virtualize in a virtual server installation, notably those directly involved in running the virtual machines themselves. VMware, for instance, recommends keeping a VMFS (VMware's native file system) partition on either locally attached storage or LUN-0 (logical unit number) of your SAN to use for swap space. Since virtual machine systems rely heavily on swapping so it's important that this partition be sized and configured for best performance. For this reason, VMware doesn't recommend putting the swap partition on a network attached storage (NAS) device. For the same reason, the VMware kernel core dump partition (vmkcore) should also be locally attached or in LUN-0. Sponsored by: Page 8 of 16
  • ACCELERATING GROWTH WITH SERVER VIRTUALIZATION FOR SMALL AND MEDIUM ENTERPRISES Insight Investments, Corp., server consolidation resulted in greater IT resource utilization, freed up server room space, and cut cooling, power, and operat- This paper examines the pro- ing costs by an estimated 65%. cess Insight Investments followed in its successful server and data consolidation project. For medium-sized enterprises with limited IT staffs and budgets, it provides real-world feedback about how to use virtualization to increase utilization, improve high availability, minimize routine maintenance, and provide ongoing improvements to a computing infrastructure. V irtualization has been viewed as an option primarily for large enterprises with sizeable IT budgets to manage the prolifera- tion of servers, to increase server utilization and to support large mainframes. Now, high-performance workstations and servers are making virtualization a possibility for small and medium busi- nesses (SMBs). A recent Yankee Group report, SMB Infrastructure Goes Virtual, noted, “As hardware becomes more powerful, virtu- alization will become a necessity – even for businesses running a handful of servers.” Insight Investments, Corp., a rapidly growing systems integrator and technology leasing firm in Orange, California, epitomizes the benefits that rapidly growing organizations can enjoy through vir- tualization. Insight’s server consolidation – which involved consoli- dating 15 physical servers onto three VMware ESX servers – resulted in greater IT resource utilization, freed up server-room space, and cut cooling, power, and operating costs by an estimated 65%.
  • Storage for Virtual Environments VMware users explore disaster recovery options VMware users explore disaster recovery options By Alex Barrett Improving your disaster recovery posture gets a lot of lip service, but for most companies, not a lot of action. But IT managers are finding that using virtualization software can make it easier—and cheaper—to move disaster recovery out of the planning phase and in to production. "DR's been on my to-do list for much longer than I care to admit," said John Kutz, director of information services and systems at Minneapolis, Minn.-based Verifications, Inc., a provider of pre-employment background checks. Last year, when the company began to look in to VMware virtualization as a means to improve utilization and reduce infrastructure, Kutz also discovered that virtualization would help them implement DR. That realization sealed the deal. "The ability to do DR drove us to making the [virtualization] selection much more attractive," Kutz said. Working with VMPowered, A VMware Authorized Consultant (VAC) in Circle Pines, Minn., Verifications began replicat- ing its virtual machines to their disaster recovery site 200 miles away using the SnapMirror feature on the Network Appliance 3020 disk arrays at their primary and secondary sites, which copies the changes made to a snapshot of the virtual machines (VMs). "What I like is how [virtualization and DR] complement one another—I get my application and my OS in one fell swoop," Kutz said, without having to have an exact replica of server hardware sitting idle at the remote site. "All I know is that within 20 minutes I can bring replicated VMs back online," he said. Array replication vs. host-based replication But when it came to replicating its VMs, Verifications went down a path that not all IT shops can afford. Array- based replication software typically comes as an add-on license to an already pricey storage area network (SAN) set-up. A replication license on your typical Fibre Channel SAN device usually starts at around $10,000 per device— of which you need two—plus the cost of Fibre Channel-to-IP conversion equipment, said Eric Schott, director of product management at iSCSI SAN vendor EqualLogic. Schott added that EqualLogic does not charge extra for replication on its arrays. Furthermore, IT managers that choose array-based replication need to pay careful attention to how the replication is configured. At its core, array-based replication doesn't replicate virtual machines per se, but the volumes that they are stored in. As such, virtualization and storage administrators need to ensure that all VM files that need to be replicated are stored in a properly replicated volume. Host-based replication software is an arguably simpler way to steel virtual machines against disaster. Gene Barnes, IT manager at S.H. Smith and Company, Inc., an independent wholesale insurance broker in West Hartford, Conn., set up high availability and disaster recovery for six servers using a combination of VMware GSX (now VMware Server) and replication software from Double-Take Software in Southborough, Mass. Barnes installed VMware GSX on a free server and used VMware's old P2V Assistant physical-to-virtual migration tool to create back- up virtual versions of the company's Exchange, file and application servers. He then installed Double-Take within the primary application servers and set it up to replicate to their virtualized clones on the GSX host. Sponsored by: Page 10 of 16
  • Storage for Virtual Environments VMware users explore disaster recovery options Barnes also uses Double-Take to replicate a file server at a remote office in Needham, Mass. back to a virtual machine in West Hartford headquarters, helping Barnes ensure that the file server always gets backed up. "We don't have an IT presence in Needham; by replicating [the file server] down here, we just back it up using our normal SAN and backup software," he said. Pricing for Double-Take in a virtual environment runs $7,995 for up to five replicated Windows VMs, regardless of where they are running in an ESX cluster. The company also offers a more affordable replication option for VMware users that leverages VMware's own built-in snapshot capabilities. Announced in February, Double-Take for VMware Infrastructure 3 (VI3) runs in the ESX service console and will replicate up to 10 VMs for $2,495. Other than price, the advantage of running Double-Take from within the service console is that users can replicate any VMware supported operating system—not just Windows—without having to load any software into the guest, said Dave Demlow, Double-Take CTO. The downside, however, is running within the service console doesn't give the replication software as granular a view of the replicated system. "When you're running within the VM, there are a lot more things you can do by being aware of the specific operating system, by optimizing failover, and by deciding which files really need to be replicated and which don't," Demlow said. "We can really pick and choose what we replicate." Ultimately though, keeping the entry cost to disaster recovery low is key, said Chris Ackerberg, vice president of global sales and marketing at Vizioncore Inc. in Buffalo Grove Ill., whose esxReplicator competes against Double-Take. "We're not going for the top tier of organizations," Ackerberg said—those with the budget and expertise in house to do array-based replication. "We're going for the next group of people that would like their information to be repli- cated, but don't have a ton of money." In some cases, those can be departmental IT managers within a large organization and "that don't want to contact their SAN administrator." Vizioncore introduced a new version of esxReplicator last month. Among other features, version 2.0 include better performance, VMotion, DRS and VirtualCenter integration, and the ability to bulk load VM images and resynch if connectivity is lost between the VM and its replica. To keep costs low, esxReplicator copies virtual machine files to an offline VM, Ackerberg said, which is only turned in the event of a disaster. That way, "there's no operating cost, no OS licensing, no maintenance," he explained. But at $499 per replicated virtual machine, some experienced VMware administrators may still forego a commercial tool like esxReplicator and simply write some scripts that take a snapshot of a VM and copy it off-site. To that, Ackerberg said, "For $500, we give you a GUI and scheduling abilities. Sure, some guy could achieve the same thing using home grown scripts, but they could get disgruntled or get hit by a bus. What we do is take a lot of complicated Linux scripting and wrap it in to a package that any admin can use." Even with all these choices, what if IT admins are still discontented with their DR options? Stay tuned, said EqualLogic's Schott: at VMworld next September, don't be surprised if VMware reveals new products and functionality that further streamlines the protection of a virtual machine against disaster. Sponsored by: Page 11 of 16
  • Storage for Virtual Environments VMware and NetApp in cahoots? VMware and NetApp in cahoots? By Alex Barrett Sources close to VMware Inc. and Network Appliance Inc. say that engineers at the two firms are working closely to improve integration between VMware's ESX virtualization platform and NetApp's storage software, specifically its snapshot capabilities. "They are basically developing a SnapManager for VMware, just like they have for SQL Server or Exchange," said a systems integrator familiar with the companies' roadmaps. Right now, NetApp storage can do a snapshot of virtual machines at the logical unit number (LUN) level, he explained, but "NetApp can't directly quiesce a virtual machine today." That's not to say that people don't use NetApp snapshot technologies in VMware environments today; they do. But in order to get a consistent copy of a VMware virtual machine, they need to use VMware's own snapshot function, which consumes resources on the host. In contrast, NetApp performs its snapshots on the array, consuming no CPU resources. Today, integrating the two technologies also requires some VMware scripting prowess. For example, in the NetApp bulletin "Five ways to use NetApp SnapShot copies and VMware VI3," NetApp professional services consultant Mike Slisinger describes one joint customer, Loyola Marymount University (LMU), which uses NetApp Snapshots to protect its VMware environment. To do so, "LMU developed its own script to automate backups and is working with NetApp to document its implementation," Slisinger wrote. "This script uses the VMware snapshot capability to quiesce the virtual machine so that a consistent NetApp Snapshot copy can be created." NetApp neither confirms nor denies A NetApp exec's corroborates the notion of collaboration between the two companies. Server virtualization "creates a powerful need for storage virtualization," said Phil Brotherton, NetApp senior director of enterprise alliances and solutions. "VMware integration is good today, but we are committed to tightening it up even more." "VMware," Brotherton added, "is my life right now." By NetApp's own account, catering to VMware users is critical to its future. As it stands, the company counts more than 4,000 of its systems connected to VMware ESX—and many more if you include servers running VMware Server, the company's free product, Brotherton said. Given market predictions, that number will only increase. "NetApp believes that, within three years, 50% of servers will be running within VMware or some form of virtualization." Brotherton estimated that about 40% of NetApp customers connect their arrays to ESX hosts via Fibre Channel, another 40% via iSCSI, and 20% via NFS. Sponsored by: Page 12 of 16
  • Storage for Virtual Environments VMware and NetApp in cahoots? NetApp storage software already has a lot to offer VMware environments, Brotherton added. Take FlexClone, the snap- shot implementation built on top of the FlexVol flexible volume manager in Data ONTAP 7G. When creating a clone, "we only store the changed blocks, so you basically get a clone for free," Brotherton said. In storage-hungry VMware environments, the ability to consume minimal resources when cloning virtual machines is a compelling feature. It should be noted that NetApp is not the only vendor working to integrate its storage software with VMware virtual environments. Vizioncore with its esxRanger and esxReplicator backup and replication software has emerged as one of the leading third-party VMware tool providers; replication vendors like Double-Take Software have VMware-cen- tric versions of their products, and all the major backup software vendors—Symantec Corp., CommVault, and EMC Corp./Legato, to name a few—have announced integration with VMware Consolidated Backup (VCB), VMware's tool for offloading the backup of virtual machines from the ESX host. EMC no obstacle In the technology industry, it's rare to find a company that's enthusiastic about its primary competitor. But even though EMC owns VMware outright—and will continue to own about 90% of it following VMware's initial public offer- ing this year—Brotherton is undeterred. "VMware has been absolutely great as a partner and operates on a very level playing field," Brotherton gushed. "They treat all the major vendors equally, including EMC." The IPO should only strengthen that position. "It will level the playing field even more, making it contractually level." Sponsored by: Page 13 of 16
  • Key Features • Web-based capacity planning and analysis client • Agent-less implementation • Data collection across multiple platforms Virtualization Assessment Service • Comprehensive discovery of servers in minutes, and complete inventory in hours • Rich set of capacity utilization metrics • Industry data for comparisons and benchmarking • Scenario modeling and “what-if” analysis • Trend analysis and predictions • Anomaly detection and alerts • Ad hoc analysis and reporting Overview The Insight Virtualization Assessment is a improved visibility of heterogeneous, server resource utilization monitoring tool complex IT environments, and deliver that provides an integrated set of analysis, critical insights into resource utilization for planning, and decision support functions driving intelligent infrastructure capacity that enables accelerated, more accurate purchase and allocation decisions. and benchmarked infrastructure assessment services. Delivered as both an This information can be leveraged for internal and a hosted application service, it comparative analysis and benchmarking to enables comprehensive server utilization help guide server consolidation and assessments. capacity optimization decisions for the enterprise. It can also help improve: These assessments in turn help in intelligently virtualizing and consolidating • Test and development data center infrastructure, redeploying • Environments strategic IT assets, and optimizing • Disaster recovery design workload distribution. Built for agent-less • Space/heat/power conservation implementation, Insight’s Virtualization • Server consolidation Assessments are able to collect • Asset management infrastructure data quickly, provide 600 City Parkway West 5th Floor Orange, CA 92868 (714) 939-2300 www.insightintegrated.com
  • What are the benefits of an Insight Virtualization Assessment? How are Virtual Assessments Used? Virtualization Assessments are used as analysis, planning, and decision • Company specific power, cooling & support tools to direct the key phases within a variety of infrastructure cost saving projections assessment projects, as described below: • Agent-less assessment tool • Inventory your current server assets • Assess – the current state of an infrastructure’s workload capacity through comprehensive discovery and inventory of IT assets. Measure • Performance statistics across the server loads and resource utilization across various elements of the IT entire infrastructure infrastructure—including by function, location, and environment. • In-depth analysis of server CPU, disk, and memory utilization • Plan – for capacity optimization through detailed utilization analysis, benchmarking, trending, and identification of capacity optimization • Identify opportunities to consolidate alternatives. Identify resources, and establish plan for virtualization, and rationalize complex, hardware purchase, or redeployment. heterogeneous data • What-if scenario modeling • Decide – on the optimal solution by evaluating various alternatives through scenario modeling and “what-if” analyses. Determine which • Industry benchmarking alternative best meets the business objectives. • Procurement planning • Monitor – resource utilization through anomaly detection and alerts based on benchmarked thresholds. Help generate recommendations to Other Services ensure ongoing capacity optimization. • Backup Assessment • Storage Assessment • Data Migration • Implementation Services • Custom Services Insight Integrated Systems (Insight IS), a division of Insight Investments, Corp., delivers high quality information-centric business solutions and services leveraging people, processes, and technology. We enable our clients to maximize the return on their technology investments while maintaining close alignment with their entire business strategy. At the same time, Insight reduces technology risk; optimizes capital expenditure; provides timely market intelligence and advice; offers smart refresh and migration options; and supplies upgrade alternatives. For cutting-edge and cost-effective IT solutions, contact Insight Integrated Systems for a needs based analysis. Additional information about our technology solutions and services is available online at www.insightintegrated.com About Insight IS PS-001 Insight Investment Corporation is an ISO 9001:2000 certified company. By delivering timely and consistent high- • Nationwide VMWare quality products, services, and information to our customers, Certified Consultants we seek to find long term solutions by discovering and © 2007 Insight Investments • Vendor Independent addressing the root causes. Our commitment to quality and satisfaction is a critical component in our Professional Services • Insight is ISO 9001 Certified translating to high levels of customer satisfaction and results. Discoverable, Recoverable, Fast, and Secure
  • Storage for Virtual Environments Resources from Insight Resources from Insight Insight Integrated Systems Professional Services Insight Integrated Systems Virtualization, Planning and Monitoring Solutions A virtualized infrastructure from servers to storage maximizes utilization, performance, resiliency, and ROI the NetApp-VMware Solution Insight Integrated Systems Partner Philosophy Receive an IDC Analyst paper in your FREE VMware Virtualization Kit from Insight Integrated Systems Meet with Insight About Insight Insight Integrated Systems (Insight IS), a division of Insight Investments, Corp., delivers high quality information- centric business solutions and services leveraging people, processes and technology. Being vendor independent, Insight IS helps select only the best technologies from the best vendors—assuring client companies remain at the forefront of technology without the inherent cost. Insight remains highly selective, aligning with vendors who are compatible in their goals and objectives, both from a technology and a business perspective. As a result, you can be confident we deliver the right solutions and breadth of services that offer clients the great- est flexibility and return on their investments. We enable our clients to maximize the return on their technology investments while maintaining close alignment with their entire business strategy. At the same time, Insight reduces technology risk; optimizes capital expendi- ture; provides timely market intelligence and advice; offers smart refresh and migration options; and supplies upgrade alternatives. Insight helps small, medium and large business win in the technology age with the most comprehensive set of inte- grated services in the industry today. The result is the most efficient running IT systems program available today. For cutting-edge and cost-effective IT solutions, contact Insight Integrated Systems for a needs based analysis. Additional informtion about our technology solutions and services is available online at www.insightintegrated.com. Sponsored by: Page 16 of 16