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Ebook hybrid cloud

  1. 1. HYBRID CLOUDFROM THE EXPERTSSee how experts and industry analysts share theirinsights into the promise that hybrid cloud offerstodays enterprise.Are the individual entities of public and private clouds too rigid forneeds of todays enterprise?There are strong arguments for both sides of the different cloudoptions. The public cloud offers flexible capacity for changingdemand. Yet is the public cloud as secure for data as on-premiseoptions? Can mission-critical data be safely moved off-premises?And how will disaster recovery be maintained?According to the experts, most enterprises will eventually end up withhybrid cloud environments. But thats easier said than done.Hybrid IT is the new IT and appears here to stay. While the cloudmarket matures, IT organizations will be adopting a hybrid IT strategythat not only builds internal clouds to house critical IT services andcompete with public clouds, but also utilizes the external cloud tohouse noncritical IT services and data, augment internal capacity,and increase IT agility. A publication of Sasha Gilenson [Pick the date]
  2. 2. HYBRID CLOUD INSIGHTS FROM THE EXPERTSThis eBook is presented to you by EvolvenEvolven.Configuration and Change Managementfor the Modern Data Center and Cloud.Evolvens designed from the ground up to deal with thedynamics and complexity of the modern data centerand cloud environments.  Dynamically crawls and collects comprehensive environment configuration information  Gives you a consolidated view of your entire application stack  Captures and analyzes changes in configuration parameters down to the most granular level  Applies analytics to deliver actionable information  More: See our website to Free Trial see Evolven in action Share this eBook! 2 www.evolven.com
  3. 3. HYBRID CLOUD INSIGHTS FROM THE EXPERTSC ontentsMind the Gap: Here Comes Hybrid Cloud ..................................... 4Why a Hybrid Approach to Cloud Computing Works Best for Now...................................................................................................... 6Hybrid cloud: Extend Your Private Cloud With Public CloudServices ........................................................................................ 9The Hybrid Cloud: What Is It, and How Do You Get There?....... 11The Hybrid Cloud: The Best of Both Worlds ............................... 14Why You Should Consider Hybrid Cloud Computing For YourBusiness ...................................................................................... 18Hybrid Cloud model: Challenges and Opportunities ................... 20Hybrid Cloud: Harsh Reality And New Challenges ..................... 23 Share this eBook! 3 www.evolven.com
  4. 4. HYBRID CLOUD INSIGHTS FROM THE EXPERTSMind the Gap: Here Comes Hybrid CloudBy Thomas J. Bittman, VP Distinguished Analyst, GartnerThere’s Just when you thought you were starting to understand cloud computing, and private cloudcomputing, here comes hybrid cloud!Vendors are already flocking to the term – it means everything from remotely managed appliances to amix of virtual and non-virtual servers to traditional applications using cloud services, and everything inbetween. So what is it?Gartner defines a hybrid cloud service as a cloud computing service that is composed of somecombination of private, public and community cloud services, from different service providers. A hybridcloud service crosses isolation and provider boundaries so that it can’t be simply put in one category ofprivate, public, or community cloud service. This definition is intentionally loose, because there reallyare a lot of interesting edge exceptions, and rather than draw a tight boundary around what is, and whatisn’t, this seems to get to the central point of the matter well enough.So why is hybrid cloud computing useful? It allows you to extend either the capacity or the capability ofa cloud service, by aggregation, integration or customization with another cloud service. For example,there might be a community cloud service that needs to include data from public cloud services in itsanalysis – while retaining a certain amount of analytics or data privately. Or a private cloud service thatneeds to expand its capacity by extending temporarily into a public cloud service (or perhaps asomewhat private cloud service offered by a third party provider). It allows you to balance your privacyneeds with additional capacity and capability needs.The terms “overdrafting” and “cloudbursting” have been used to describe how a hybrid cloud servicecould be used for capacity, but they paint an extreme example. Hybrid cloud compositions can be static(designed to require multiple services), composed at deployment/usage time (e.g., perhaps choosingone service provider or another, or combining based on policies), or composed dynamically (e.g.,cloudbursting – or perhaps at disaster recovery time).While these compositions can be designed into services and/or cloud-based applications, they will oftenbe managed by cloud services brokerages – the intermediary that Gartner expects to become a majorphenom in the next few years (something like the system integrator of the cloud world). Largeenterprises will often take on this role themselves – in fact, this is central to Gartner’s vision for thefuture of IT.So what does all this mean now? It means look out – the world is not going to be neatly divided intoseparate private and public cloud services. To maximize efficiency and take advantage of publiclyavailable cloud services, we’re going to munge them together. Private clouds, in particular, will not staysimply “private” for long – Gartner expects most private cloud services to become hybrid. Minding thegap is key – planning for it, balancing isolation and value, leveraging it – hybrid will move from the realmof hype and vendor cloud-washing to reality in the next few years. Share this eBook! 4 www.evolven.com
  5. 5. HYBRID CLOUD INSIGHTS FROM THE EXPERTSPublished: http://blogs.gartner.com/thomas_bittman/2012/09/24/mind-the-gap-here-comes-hybrid-cloud/ About T homas J . B ittmanThomas Bittman is a vice president and distinguished analyst withGartner Research. Mr. Bittman has led the industry in areas suchas cloud computing and virtualization. Mr. Bittman was an earlypioneer for the concept of private cloud computing, and inventedthe term "real-time infrastructure," which has been adopted bymajor vendors and many enterprises as their infrastructuredirection. He has served as Gartners lead analyst covering IBMand Microsoft, and he served for three years as a member ofGartners Senior Research Board. In 2005, he earned GartnersAnalyst of the Year Award. http://www.linkedin.com/pub/thomas-bittman/11/26/b39 https://twitter.com/tombitt Share this eBook! 5 www.evolven.com
  6. 6. HYBRID CLOUD INSIGHTS FROM THE EXPERTSWhy a Hybrid Approach to Cloud ComputingWorks Best for NowBy Joe McKendrick, Contributor, Forbes.comCall it one of the most expensive insurance policies in the world. Companies have spent billions ofdollars over the years building and maintaining backup disk arrays and secondary data centers to keepthings running in the event that something goes wrong.Cloud turns backup and recovery on its head, making it possible to provision back-up sites as needed, forpennies. Ironically, however, this goes against the gut instincts of many IT executives, who spend a lot oftime worrying about data security and availability.Goodbye to a lot of that? Hybrid cloud provides a failsafe approach without the need for a secondarybackup site. Photo: WikipediaThat’s the view of David Nichols, principal and Americas CIO services leader for Ernst & Young ITAdvisory Services, who has been working closely with companies across the globe to identify cloudopportunities. I recently had the opportunity to chat with Nichols to get his take on the pluses andminuses of cloud computing, and he observed the approach is still in its early stages.While “there is a lot of demand for cloud,” he confirms, most companies do not yet have a formalstrategy or end-goal. That’s because most companies have not reached the point where at least 30% oftheir workloads are carried in the cloud, he says. Once an organization passes that 30% threshold, cloudstarts to become a serious part of the business.And Nichols has heard a lot of arguments from both sides lately about the viability of cloud – the cloudnot as secure as on-premises systems for data; the cloud is more secure than on-premises systems fordata. On one side, he hears: “’There’s no way I can move mission-critical data off-premises. I can’t allowstuff to not be within my four walls, how do we do disaster recovery, how do I make sure this stuff isrestored?’”Still, he relates, other executives say they favor the cloud precisely because it is more secure. “AnotherCIO told me that was exactly the reason he moved some of his stuff to the cloud. As he put it: ‘If all theydo is data storage, they’re going do it better than my people do it. That’s all they do, every day. Whenyour transmission breaks, are you going to take it to a generalist, or are you going to take it to atransmission specialist? Plus, cloud providers will have better procedures, more sophisticated andbetter data recovery procedures and more sophisticated firewalls.’”Perhaps the best approach is to have the best of both worlds. Nichols says a hybrid cloud strategy,which incorporates both off-site and off-site services, provides a “failsafe” model for enterprises.“Maybe there are some things you can do in the cloud model, and some things that you can’t becausemaybe you don’t feel as secure. But the cloud could be one more failsafe. Maybe you can get one or twoor three more ’9s’ from a recovery perspective that you couldn’t have gotten otherwise. Maybe this is a Share this eBook! 6 www.evolven.com
  7. 7. HYBRID CLOUD INSIGHTS FROM THE EXPERTScheaper way to get there than it was to have to buy all the stuff and house yourself. And that’s just onthe data storage side.”By relying on the cloud for backup, it “provides one more failsafe approach, instead of having to buy asophisticated server and RAID platform,” Nichols points out. “Its a pretty cheap solution to back it up inthe cloud someplace, and therefore know you’ll always have it in case something goes wrong.”There are even rumblings from many IT executives that the cloud backup is quicker than the primarybackup. There are cases in which cloud could function as the primary backup site, with on-premisesbackup as the failover environment.The “hybrid” approach Nichols alludes to may be more common within many enterprises than all-cloudenvironment, he predicts. For the most part, cloud is still an under-the-radar phenomenon, andcompanies have not developed formal cloud strategies. “They’re not really sure what is the biggestimpact,” Nichols says. “They’re not really sure how to go about it. Is this a cost-reduction exercise? Canwe really use it to drive the business? Or is this only going to help us drive certain aspects of ourcorporate strategy, but not really moving the needle on our ongoing business?Until cloud workloads surpass that 30% mark in organizations, cloud will “remain hidden withinoperating models within IT organizations,” he points out. In the long run, he predicts, cloud penetrationwithin enterprises will reach 70%. As organizations move between the 30% and 70% points, expect tosee widespread adoption of hybrid approaches to cloud computing – a blended strategy of using outsidecloud services and internal private cloud.At the same time, he says, any and all new software development – both within enterprises and amongvendors – is now taking place around a cloud model versus the traditional on-premises approach. “Rightnow, we’re at a pretty strong inflection point right now,” he explains. “Very little, if anything, being builton traditional go-install-on-your-local-device model. Almost nothing going forward is going to be builtwithin that traditional framework.”In the next installment of my chat with E&Y’s David Nichols, we discuss how cloud is changing the rolesand relationships of outsourcers, entrepreneurs, and IT professionals, with advice on building asuccessful cloud relationship.Published: http://www.forbes.com/sites/joemckendrick/2012/01/17/why-a-hybrid-approach-to-cloud-computing-works-best-for-now/ Share this eBook! 7 www.evolven.com
  8. 8. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout J oe Mc K endric k Joe McKendrick is an author and independent researcher, coveringinnovation, information technology trends and markets. He also can befound speaking (and listening!) at business IT, cloud and SOA industryevents and Webcasts. He serves on the program committee for this yearsSOA & Cloud Symposium in London. He is also one of 17 co-authors of theSOA Manifesto, which outlines the values and guiding principles of serviceorientation in business and IT. http://www.linkedin.com/pub/joe-mckendrick/2/80/168 Share this eBook! 8 www.evolven.com
  9. 9. HYBRID CLOUD INSIGHTS FROM THE EXPERTSHybrid cloud: Extend Your Private Cloud WithPublic Cloud ServicesBy Doug Dineley, InfoWorldHave you noticed how much technology vendors like to talk about stuff that doesnt exist? The so-calledhybrid cloud is one of the utopian dreams of cloud computing, a vision of seamless interoperabilitybetween the private cloud running in your data center and resources at your disposal in one or morepublic clouds. A heavily marketed work in progress, the hybrid cloud promises such colorful new usecases as "cloud bursting" and "follow the sun" and "follow the moon" computing.Before we get to seamless, though, well get hybrid clouds with seams. VMware, Microsoft, and opensource rivals OpenStack and CloudStack are building cloud software stacks designed for both private andpublic deployments, giving administrators common management tools, and developers common APIs,across the different environments. Similarly, Eucalyptus has built its private cloud business oncompatibility with Amazon Web Services APIs, allowing customers who have built applications on AWSto deploy them on-premise, and vice versa.Compatibility and consistency across private and public clouds means being able to create assets --virtual machines, provisioning templates, automation scripts -- in one place and use them in another. Italso paves the way to coordinating the use of private cloud and public cloud resources. You could run anapplications Web tier in the public cloud for easier and more elastic scalability, while keeping the back-end database in the private data center, for example. Or you could run Web app servers in both clouds,triggering the provisioning of additional instances in the public cloud in response to spikes in applicationusage -- an example of cloud bursting.However, while a certain degree of hybrid cloud goodness is available today, more pieces must fall intoplace before we can think seriously of using a public cloud as a seamless extension of the data center.First, none of the leading cloud stacks, open source or proprietary, currently supports multisitemanagement. Even when private and public clouds share the same kinds of tools, each cloud must bemanaged separately.Second, migrating live workloads from one cloud to another will require network virtualizationtechniques -- such as Ciscos OTV, VMwares VXLAN, or Microsofts NVGRE -- that are only just emerging.Not even considering the distance limitations imposed by WAN latency, were sure to see many moresuns and moons before virtual machines begin hopping from data center to data center and followingusers around the globe..Published: http://www.linkedin.com/pub/doug-dineley/0/48b/951 Share this eBook! 9 www.evolven.com
  10. 10. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout Doug DineleyDoug Dineley is executive editor of the InfoWorld Test Center. http://br.linkedin.com/pub/thoran-rodrigues/14/892/b2b Share this eBook! 10 www.evolven.com
  11. 11. HYBRID CLOUD INSIGHTS FROM THE EXPERTSThe Hybrid Cloud: What Is It, and How Do YouGet There?By Mike Fratto, Editor at Network ComputingHybrid cloud. Youre all aiming for it--thats what vendors, analysts and respondents to a soon-to-be-released private cloud survey are saying. The upcoming InformationWeek survey found that 61% ofthose building a private cloud and currently using public cloud plan to adopt a hybrid-cloud approach.Lets see what needs to be done before you get there.First, lets assume that hybrid cloud means running a set of applications across a private cloud (a cloudinfrastructure you own and manage) and a public cloud (compute, storage and networking resourcesthat someone else owns and manages but you use/lease/rent). Sometimes the application is here,sometimes its there, and sometimes its in both places. There are a few hurdles to get over.You have to get the application and its associated data to the right place at the right time, which isnt aseasy as it may seem. Many enterprise applications are built with the assumption that the stuff theydepend on will be close by, and if more processing power is needed, then you can add another serverand direct load to it. If youre going to use a hybrid cloud to move processing between clouds, then youneed to make sure the applications are already residing in both places. Given the size of many virtualmachines (VMs)--measured in the tens of gigabytes--you will need to preposition the bits and keep themup to date or wait for several hours, days or weeks to get the bits where they need to be.There are several ways to position the applications. The most likely is building an OS image in the cloudservice and installing your applications there, rather than trying to move an existing VM from yourprivate-cloud environment to a public cloud. Frankly, the transport time to move a VM from here tothere will likely be so long that it would be faster to reprovision. With management tools like Puppetand Chef, ensuring that servers and applications are properly configured is pretty easy.Moving the data is a different issue. Its simplistic, and likely wrong, to think that you need to move yourentire data store to either location. You may find you can get away with keeping your data in onelocation and accessing it from anywhere. Obviously, you need to be aware of the additional delay andbandwidth costs, but a few milliseconds wont matter much, depending on your application. Oh, I knowdelay is cumulative and reducing delay is always a good thing, but here you have balance--acceptabledelay versus the benefit of a hybrid cloud. You may even be able to mitigate delay, with some creativeprefetching, caching and other application-level tuning.If you must move data, perhaps you can move just the portion that will likely be required, rather thanthe entire data store. If the data store has to be in both places in its entirety, youre looking at setting upsome sort of replication and synchronization. That can be pricey, considering that youll need topurchase and manage the replication software. Youll be paying for not only the cloud storage, but alsothe cost to transport the data. It starts to add up. Share this eBook! 11 www.evolven.com
  12. 12. HYBRID CLOUD INSIGHTS FROM THE EXPERTSThen theres the networking. Networking in the public cloud is generally pretty pathetic compared withwhat you have in-house. In many cases, you cant even define VLAN IDs or IP subnets in cloud networks.I know a number of enterprise applications require fixed IP addresses and are hard to change once set. Ialso know there are IT admins who insist that static IP addresses are still the only way to go. Forget it.Wherever you can, replace fixed, static IP addresses with host names and let applications resolve hostnames to IP addresses the way Internet pioneers Jon Postel and Paul Mockapetris intended.Alternatively, you could look at overlay network products that encapsulate inter-VM traffic and justignore whats underneath. And lets not forget that if youre going to move an application to anotherlocation and possibly IP address, or run the app in both places, youll need to direct traffic to eachlocation.Getting to a hybrid cloud isnt impossible. In fact, with proper design and engineering, its quiteachievable--provided you determine what your application demands really are and how you can meetthem while splitting processing among different locations..Published: http://www.networkcomputing.com/cloud-computing/the-hybrid-cloud-what-is-it-and-how-do-y/240001292 Share this eBook! 12 www.evolven.com
  13. 13. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout Mike F rattoMike Fratto is Editor of Network Computing and is track chair forInterops Data Center and Storage tracks. He has been withTechWeb for over 11 years and has extensive experienceevaluating enterprise remote access, security, and networkinfrastructure products. He previously was Lead Analyst withInformationWeek Analytics, Senior Technology Editor withNetwork Computing and Executive Editor for Secure Enterprise.He has spoken at several conferences including Interop, MISTI,the Internet Security Conference, as well as to local groups. He istrack chair for the data center and storage tracks at Interop. Healso teaches a network security graduate course at SyracuseUniversity. Prior to Network Computing, Mike was an independent consultant. http://www.twitter.com/mfratto Share this eBook! 13 www.evolven.com
  14. 14. HYBRID CLOUD INSIGHTS FROM THE EXPERTSThe Hybrid Cloud: The Best of Both WorldsBy Kyle MacDonaldMore and more organizations are deploying cloud-based solutions, both to reduce in-houseinfrastructure and management costs and to gain access to virtual networks, compute resources andstorage on demand.However, while the cloud’s potential to increase IT agility and reduce costs is well known, verticalindustry regulations and corporate privacy policies often prevent sensitive data and workloads frombeing managed in the public cloud. For organizations that want to keep some of its IT behind corporatefirewalls, while exploiting the cost and scalability of the public cloud, the hybrid cloud is the wayforward.In hybrid cloud environments, private cloud infrastructure behind the firewall provides control,regulatory compliance, cost management and security. At the same time, public cloud elements offereconomic efficiency, burst capacity and disaster recovery. With careful planning and the right tools, it’spossible to scale private cloud infrastructure into public clouds such as Rackspace, Amazon, HP andothers.Hybrid C loud C hallengesTo successfully build and run a hybrid cloud and achieve these benefits, organizations must tame thecomplexity that traditionally surrounds cloud design and construction.Bear in mind that clouds combine diverse infrastructure components, from hardware, networks andstorage, to operating systems and applications. These are typically developed independently to differentcloud standards, with different configurations. In addition, specialized skills are needed to connect them– increasing deployment timelines and costs.To build a hybrid cloud, all its constituent parts have to be deployed at the same time, in a fullyintegrated way. They also need to work as dynamic elements of a bigger whole to deliver truecomputing elasticity on either side of the corporate firewall – as well as automated provisioning and de-provisioning, open APIs and pay-as-you-go metering and billing.To make hybrid clouds work well, organizations should steer clear of proprietary technologies and theirproprietary APIs. As well as limiting integration of private and public cloud infrastructure, proprietarytechnologies follow the ‘use more, pay more’ financial model, which is never economically viable in atruly elastic computing environment.Open-S ourc e: E s s ential for the Hybrid C loudWhat’s needed to build hybrid clouds is technology that is truly open-source, and based on open cloudstandards. Only this kind of technology provides the dynamic integration needed between private andpublic cloud infrastructure, while supporting cost effective scaling of computing resources. Share this eBook! 14 www.evolven.com
  15. 15. HYBRID CLOUD INSIGHTS FROM THE EXPERTSTo this end, key open-source initiative OpenStack has been deployed as the foundation for many of theleading public clouds – including Rackspace, Amazon, HP and more. However, by giving organizationsthe same open-standards-based components, standards and APIs for their private clouds, OpenStackalso allows workloads to be migrated quickly and easily from private to public infrastructure, making thevision of the hybrid cloud a reality.R apid S ervic e P rovis ioning and S c aling in the Hybrid C loudWith OpenStack infrastructure in place, organizations have the standard APIs and management toolsthey need to seamlessly integrate private and public cloud infrastructure. However, they still need fast,simple ways to provision and scale services and capacity across the hybrid cloud.Some leading cloud companies are developing orchestration tools to speed service provisioning –making it virtually a ‘point-and-click’ operation. These tools can offer significant productivity benefits fororganizations deploying services in the hybrid cloud.Recently an entirely new approach to developing and deploying cloud-based services has beendeveloped. This is based on collections of code that contain all the information needed to deploy,connect and scale services in the cloud in minutes. Many of these collections are created by theworldwide open-source community.These code collections offer all the typical cloud components organizations need – from populardatabases and web application servers, to load balancing systems and computational frameworks. Theyare cloud neutral, so they work as well on private and hybrid clouds, and fully support EC2, Rackspace,HP and a range of other public infrastructure.C ontrolling the Hybrid C loudA major question for organizations is how to stay in control of their hybrid cloud environment as userscontinually provision new services, transition workloads and scale up resources. To address thischallenge, businesses should look to deploy a dashboard for the hybrid cloud, which ensures compliancewith regulations for systems and data management and offers a range of features for controlling hybridcloud environments.Using a dashboard, organizations can synthesize multiple clouds - like Amazon, AT&T, HP, and privateclouds - into a single unified hybrid cloud. Users access private and public infrastructure as if they wereone single cloud, with access controls and policies to govern which cloud region employees can createworkloads in and how many instances they can run concurrently.By deploying this kind of management solution,, organizations can give their employees a single API, asingle credential and a single configuration for working in the cloud. It’s also possible to addrelationships with new public cloud providers without having to create new credentials for employees, Share this eBook! 15 www.evolven.com
  16. 16. HYBRID CLOUD INSIGHTS FROM THE EXPERTSor provide them with new configuration information. The new regions just show up in the unified hybridcloud as soon as they come online.S upporting the Hybrid C loudThere is still a perception that moving to cloud-based infrastructure and services implies a less well-supported environment. However, businesses should demand enterprise-class support for their private,public and hybrid clouds.Elastic support arrangements should cover a core number of machines, or an unlimited quantity ofcloud-based instances. Based on this model, organizations can ensure their cloud environments aresupported from end to end for a fixed, transparent fee.Support packages should extend far beyond fast issue resolution and direct access to hybrid cloudexperts. Those that lead the market also include IP assurance, compliance with government certificationstandards and cloud monitoring, reporting and administration tools. Free upgrades and security releasesshould also come as standard.L as t W ordOpen-source technologies provide the integration, dynamism and economic model required to build anddeploy hybrid cloud infrastructure. However, not all open-source technology is equal.To ensure success, organizations should choose systems that are optimized at every level to supportelastic scaling of IT resources across hybrid cloud infrastructure. As well as being based on OpenStack,the de facto cloud standard, cloud infrastructure should provide standard APIs for accessing private andpublic infrastructure; intuitive monitoring and management tools for the hybrid cloud environment; andtools for rapidly deploying, provisioning and scaling cloud-based services.Lastly, but no less importantly, support should extend across private and public infrastructure. Thisprovides the peace of mind that the infrastructure will deliver the security, availability and performancethat today’s businesses need..Published: http://www.virtual-strategy.com/2012/08/21/hybrid-cloud-best-both-worlds Share this eBook! 16 www.evolven.com
  17. 17. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout K yle Mac Donald Kyle MacDonald is the Vice President of Cloud at Canonical. He isresponsible for strategy and execution of the Ubuntu Cloudbusiness. Past roles include serving as Chief Evangelist atCloud.com, Vice President of Corporate Development andStrategy at Hosting.com/Wachovia Capital Partners, and executiveleadership positions at Sun Microsystems including leading theWeb 2.0, Internet, and next-gen service providers sector at SunMicrosystems. https://twitter.com/kylemacdonald Share this eBook! 17 www.evolven.com
  18. 18. HYBRID CLOUD INSIGHTS FROM THE EXPERTSWhy You Should Consider Hybrid CloudComputing For Your BusinessBy Florence de Borja, CloudTweaksHybrid cloud computing was introduced in 2008 and it wasn’t accepted with open arms. With public andprivate clouds in place, cloud computing believers felt they already have enough. But then, as time goeson, hybrid clouds are inching their way to the forefront to be recognized. They are now being regardedas important and valid for businesses. The challenge now for hybrid cloud computing is to get past theinitial resistance of cloud computing providers who are now promoting extensively the use of publicclouds. Needless to say, these cloud providers are barring the cloud computing improvement andprogress. In fact, most small and medium scale businesses have doubts about public clouds.Hybrid clouds can enable enterprises to tap public clouds for some IT infrastructure while the rest of theIT infrastructure can be left on site. In some instances, it is still best to keep the enterprise data on sitewhile the processing and applications stay in public clouds. Hybrid clouds provide value to businessesbecause it provides an opportunity to combine various resources, which can be provided on demandand highly scalable, with local infrastructure. Enterprises can opt to locate their data and applications onthe best platforms then distribute processing among the resources. Not everything must be located inpublic clouds due to security restrictions, performance requirements, and compliance issues. The hybridmodel, so far, is the best option for enterprises.Cloud computing provides scalability and server virtualization but there are some instances where it isnot possible to adapt. Virtualization, on the other hand, draws the line for network security boundariesfor deployments and business service. It is able to define which can elements can be moved or placed.Basically, it can offer network security layer. It can also offer an abstraction of the application tier overboundaries of cloud deployment. Because virtual private cloud technologies and cloud computing areevolving, enterprises can now match the infrastructure to the application needs inexpensively andefficiently.When entities build a hybrid cloud strategy, they have to consider management, deployment, andautomation for optimal results to their business services. Anybody wishing to implement hybrid cloudsmust have thorough knowledge of each deployment schemes like hosted, internal, and public clouds sothat these schemes can be linked efficiently and effectively through traditional deployments in a virtualprivate cloud. Deployment expenses can be streamlined by creating a strategy which can best optimizethe entity’s business services. IT service delivery must be provisioned quickly at very minimal costs.There are enterprise architects who can be tapped to be able to obtain the best deployment model forthe business. The enterprise architect will be able to suggest the kinds of deployments needed, and theparts of applications that can be deployed in different resources along with the corresponding data sets.Data protection must also be of utmost consideration. The enterprise can tap the services of riskmanagement and security experts for better judgment regarding deployment of applications. A policymust be created for every application development experts so that they can be guided regarding the Share this eBook! 18 www.evolven.com
  19. 19. HYBRID CLOUD INSIGHTS FROM THE EXPERTSutilization of cloud resources. Current hosting providers of the company can also be consulted regardingtheir future plans on cloud computing so that you can plan accordingly. Some of these providers arealready offering cloud services. When planning a cloud computing strategy, it is best to understand whatthese hosting providers are currently offering or planning to offer, what configurability degree can beprovisioned by them, and what virtual private cloud services they can provide between their clouds andthe enterprise’s data center.A hybrid cloud strategy may be the smartest move any enterprise can make because it is able to mix andmatch various elements of hosted, internal, and public cloud computing.Published: http://www.cloudtweaks.com/2012/04/why-you-should-consider-hybrid-cloud-computing-for-your-business/ Share this eBook! 19 www.evolven.com
  20. 20. HYBRID CLOUD INSIGHTS FROM THE EXPERTSHybrid Cloud model: Challenges andOpportunitiesBy Lux Rao, InformationWeekThe In the global marketplace, enterprises must move quickly to capitalize on the latest growthopportunities and stay one step ahead of the competition. IT services play an important role in fosteringthe innovation required to fuel new business ventures. Today, CIOs need to be in a constant state ofreadiness to provide their users with the technology services to enable innovative businessopportunities and respond to customer demands.Cloud computing, with its promises of fast delivery, flexibility and cost savings, has emerged as a viableoption for providing agile IT services. By utilizing cloud services, enterprises can look ahead to anticipatecustomer needs and predict business trends without having to worry about the IT infrastructure,platforms and applications that might be required to support them.From a business perspective, the appeal of cloud is clear: speed, flexibility, economics. The idea ofgoing to a portal to request a service that is instantly provided has innate appeal, particularly comparedto the experience they have with most internal IT departments. It only takes a credit card. For manyyears, businesses are asking for better user experience with intuitive user interface, access to data andtheir business processes anytime, anywhere. They want access fast at Internet speed now and last butnot least they want a flexible model that adapts to the business changes.While end users believe it is allowing them to respond faster to their business needs, without acomprehensive plan and governance model, they could jeopardize the security of their enterprise dataand applications. Additionally, CIO’s cannot effectively track, measure and budget for this shadow IT sobusinesses don’t have a true picture of how their resources are used. CIO’s are struggling with 70percent of resources captive in maintenance and operations.CIOs need solutions today that will accelerate the deployment of service-oriented environments,matching the speed, flexibility and economics of public clouds but without the risk or loss of control.T he Hybrid C hoic eCIOs are mapping their path to the cloud and identifying where public and private cloud solutions will beleveraged - a mix of IT delivery methods to meet their users’ demands.In a hybrid world of IT delivery choices, where public cloud and private cloud are becoming viableoptions along with traditional IT services, the onus is now on IT leaders to determine which of theircurrent and future technology projects would benefit most from which model. They also mustdetermine how to turn this mix of services into a blended environment where both the man¬agementand the end-user experience are seamless and simple. Share this eBook! 20 www.evolven.com
  21. 21. HYBRID CLOUD INSIGHTS FROM THE EXPERTSCreating a hybrid IT delivery environment requires a thorough analysis of each project, as well as toolsthat manage the different delivery options in a uni¬fied, simplified wayMaking the decision to go with a cloud model or a traditional IT service is one that enterprise executivesrely on CIOs to lead, regardless of whether the idea for a new application comes from IT or a differentdepartment entirely. In order to make the right choice, CIOs should first consider the scope and natureof the applicationIf the application in question contains sensitive or confidential data, moving it to a public cloud that islocated off-site may not be the best solution due to real or perceived security and privacy risks. Thesame is true for a mission-critical application that—if hit by performance delays or lapses inavailability—will have a significant impact on business.Applications earmarked for cloud services must be able to reside on shared compute resources, and theresource requirements for those programs should be clearly understood up front, to prevent poorperformance or unexpected fees once the application is moved to a cloud service. Also required isconsideration regarding how the governance of an application—control, policy changes and upgrades—might be altered in a cloud model.Optimize the mixTo make the most of a hybrid environment, there needs to be a unified management approach. In doingso, CIOs can deliver the services their users demand without putting additional management strain onthe IT department.Application and system management tools are evolving so that IT services, be they cloud-based ortraditional, can subscribe to a common management layer and offer a unified view of an organization’sservices portfolio.Predefined, fully automated workflows help speed and simplify service delivery, allowing self-serviceand automation technology to be applied. With these tools, users can get for themselves the servicesthey need, quickly provisioning IT assets by accessing a self-service portal to build, manage and monitorservices.Such tools offer the best of both worlds; users get the speed of deployment and flexibility they need,and IT departments maintain control over their technology environment. This orchestration in essencemakes managing hybrid IT delivery environments as standardized and unified as managing homogenousenvironments, but at the same time allows enterprises to choose the best delivery method for the taskat hand and optimize that method for their own use.A service delivery road map helps IT leaders chart their options going forward, which gives them anopportunity to weigh the advantages of different methods and (hopefully) avoid pitfalls.CIOs today mustmake the right choice among private clouds, public clouds and traditional IT to maximize benefits,minimize risk and propel business. Share this eBook! 21 www.evolven.com
  22. 22. HYBRID CLOUD INSIGHTS FROM THE EXPERTSPublished: http://www.informationweek.in/Cloud_Computing/12-04-26/Hybrid_Cloud_model_Challenges_and_Opportunities.aspxAbout L ux R aoLux Rao is Country Lead, Cloud Consulting at HP India. http://www.linkedin.com/in/luxrao Share this eBook! 22 www.evolven.com
  23. 23. HYBRID CLOUD INSIGHTS FROM THE EXPERTSHybrid Cloud: Harsh Reality And NewChallengesBy Sasha Gilenson, CEO, EvolvenSo we can definitely say now that cloud computing is not just a trend anymore. Yes, there is no denyingit: companies are either moving to the cloud or seriously thinking about it.Yet many questions are still being raised: How will the cloud integrate properly with my existingenvironment? Can IT keep control of workloads, data, and even costs? How secure is cloud?Many organizations consider the public cloud to be less stable and secure than their physical datacenter, making them reluctant to place applications and underlying infrastructure in the hands of thirdparty cloud providers. Despite pressures from business, security concerns, combined with the fear of theunknown, hold IT back from adopting public cloud services.So to deal with todays agile development and fast pace of change, many in IT are looking to moveapplications to a private cloud. The private cloud offers the elasticity and availability of the cloud, whilestill staying under the control of IT and, if required, within the firewall. But what about dynamicallyadding new resources when you need to meet instantly growth on-demand?For these occasional peaks, a public cloud can be leveraged. Then how can you keep an eye on whatshappening in all your clouds and still hopefully make the right decisions at the right time?T he Hybrid C onc ept is T aking Off W ith E nterpris esThis is where the hybrid cloud concept comes in. Hybrid cloud can address these issues of integratingpublic clouds, legacy IT and private clouds together. This mix offers IT operations the benefits of self-serve provisioning and consumption-based optimization.Hybrid is not new to the enterprise. Organizations have been managing most IT resources in-house andusing some cloud-based services for others for some time, allowing enterprises to maintain a centralizedapproach to IT governance, while experimenting with cloud. Leading analysts like Forrester, Gartner andothers see hybrid cloud architecture emerging in the enterprise and even forcing the issue of legacysystems migration by 2015.Yet just as hybrid cloud combines the best features of the different platforms, it also introduces morecomplexity and less visibility. The key to getting the maximum value from all the Cloud resources will beto properly manage the hybrid operating environment.P ower of HybridOne of the key benefits of a hybrid cloud is the ability to burst computing resource as needed, in orderto cope with peak requirements, like dealing with seasonal peaks (e.g. four weeks of Christmasbusiness), without having to compound the underlying infrastructure with additional resources. Hybrid Share this eBook! 23 www.evolven.com
  24. 24. HYBRID CLOUD INSIGHTS FROM THE EXPERTScloud facilitates greater mobility, while keeping IT operations cost-effective. Hybrid offers organizationsthe potential to integrate various environments and leverage the clouds dynamics and provisioningcapabilities. This means that critical business backend services can be maintained in the private datacenter (legacy or private cloud) with the frontend, capacity intensive applications hosted in the publiccloud, making it is easy to add additional resources to cover the additional frontend activity.Declares Chris Howard, managing vice president at Gartner, "Hybrid IT is the new IT and it is here tostay. While the cloud market matures, IT organizations must adopt a hybrid IT strategy that not onlybuilds internal clouds to house critical IT services and compete with public CSPs, but also utilizes theexternal cloud to house noncritical IT services and data, augment internal capacity, and increase ITagility. Hybrid IT creates symmetry between internal and external IT services that will force an IT andbusiness paradigm shift for years to come." (Gartner Says Hybrid IT is Transforming the Role of IT).Hybrid C loud OptionsWhen we talk about hybrid, what do we mean? The hybrid cloud architecture has several dimensions. • Hybrid Public/Private: Some applications move to the private cloud, serving as a dedicated cloud infrastructure for use by one organization which can be internally or externally hosted, and some (less critical) applications are moved to public cloud, serving as a shared cloud infrastructure hosted by an external provider. The challenge is how to deal with security across several different public and private cloud instances, with barriers including: different providers, differing levels of security in the existing cloud apps, and lack of standards tying the various disparate initiatives together. • Hybrid Public/Public: Following outages from some public cloud vendor service failures, many are looking at spreading their workloads among multiple clouds to mitigate risk. To hedge their bets, businesses are looking into multi-cloud solutions. Applications are deployed to several different public clouds, not in one cloud (multiple public cloud vendors). Another attraction for multiple clouds is that some public cloud offerings just dont have services, that another public cloud vendor can complement. For instance, Amazon doesnt have IaaS in the United Kingdom, but Rackspace does. Problems emerge with how to manage the connections to multiple cloud service providers. There is no one way to talk to all services. Each cloud service provider uses its own method for connection, like how Amazon and Rackspace have different hypervisors, different virtual machine file formats, and different service APIs. This creates a complex management problem with different processes for provisioning and management that can be counterproductive for outsourcing to multiple public clouds. • Hybrid Legacy/Clouds: The integration of Legacy system with cloud services is still necessary, as many back end operations are run in legacy IT environments. Share this eBook! 24 www.evolven.com
  25. 25. HYBRID CLOUD INSIGHTS FROM THE EXPERTS The challenge comes in integrating legacy systems with cloud applications, a complex matter with ample room for error. Most software or application vendors have APIs that provide access to the data or processes in their systems, this leaves IT teams to create the scripts and infrastructure that manage this integration on their own, a task that is neither quick nor simple especially when dozens of applications are involved. As Forresters Seepij Gupta explains, "These systems simply arent architected or capable of running in a cloud environment, let alone a hybrid cloud scenario. Now, with compelling reasons to adopt hybrid cloud approaches, organizations are having a much tougher time integrating their environments. (Clouds Impact On IT Operations: Dont Overlook Your Legacy)Dealing with New C hallengesThe complexities introduced by the cloud require new management techniques, and tools. These issuesare multiplied by the need to manage several different environments. For example, you can have anapplication running in your private cloud, yet due to pressure for more availability, the capacity needs tobe expanded. The fastest and most cost-effective way to deal with this on-demand matter is to movethe application to a Public cloud.Yet how do you maintain synchronization between these different environments? Wont the spun offimage lose consistency with the image that stays in the source environment? How do you handle theissue of applications and application infrastructure moving between the different cloud environments,since there are different virtual machines for different platforms (i.e. VMware VMs, Citrix Xen, Red HatKVM etc.)?In the drive to reduce complexity, hybrid cloud sends you in the opposite direction, adding complexity asyour operations start expanding on multiple platforms.Hybrid S etup Needs S pec ialized T oolsTools for managing hybrid environments need new specialized features. • Single Point of Reference: They need to provide a single point of view to manage multiple platforms. For instance, this can require collecting configuration data from your Azure environment and comparing it with the configuration used in your private cloud. Also since these various platforms in the hybrid environments may communicate with each other, the management tool should be able to monitor and analyze various parameters of these interfaces. This is an extremely tedious job when carried out without specialized tools and in many circumstances wont give the answers you need. How can you identify problems with the applications running across different cloud platforms? How can you access relevant system data from within the different clouds to speed up problem resolution? Share this eBook! 25 www.evolven.com
  26. 26. HYBRID CLOUD INSIGHTS FROM THE EXPERTS • Visibility: IT operations have enjoyed visibility into the workings and transactions of the data center. The monitoring mechanisms for facilitating hybrid cloud require a management layer that can work all sides of the infrastructure , internal operations, private cloud, and even into the public cloud activity. While IT may have a management console for monitoring internal operations and the private cloud , public clouds have their own toolset for monitoring activity, limiting visibility to overall operations for when something happens in the private cloud that affects the public cloud.More T rans itions , MigrationsAs organizations seek to adopt the benefits of cloud to meet the higher demands and faster pace ofchange in todays data center, hybrid provides a mechanism for bringing about this transition. Securityconcerns can be mitigated, and migration of traditional legacy operations can start by moving to aprivate cloud platform. Then as capacity demands increase, and the public clouds reputation improves,these operations can be reliably transferred to public clouds. As Chris Howard, managing vice presidentat Gartner, explains, "Many organizations have now passed the definitional stage of cloud computingand are testing cloud architectures inside and outside the enterprise and over time, the cloud will simplybecome one of the ways that we do computing, and workloads will move around in hybridinternal/external IT environments." (Gartner Says Hybrid IT is Transforming the Role of IT).C onfiguration Management K ey to the Hybrid C loudE volutionYou cant make the assumption that cloud automatically results in an effective services-orientedbusiness architecture. The highly dynamic nature of cloud-based operations increases the volume ofconfiguration information and the amount of changes needed to keep track of. This complexity growsfurther by the added dimension of IT having to manage and control operations deployed across severaldistinct (and unique) cloud platforms, and pay attention to the requirements unique to each cloudsstack (private or public). Will your approach add complexity to your technology environment – or will itbring elegance and simplicity?One of the key challenges is the integration between the two clouds. This can be addressed to someextent by adopting configuration management interfaces to monitor and analyze configuration assystem transition between cloud entities, enabling application and data portability.Published: http://www.evolven.com/blog/hybrid-cloud-harsh-reality-new-challenges.html Share this eBook! 26 www.evolven.com
  27. 27. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout S as ha G ilens onSasha Gilenson enjoyed a long and successful career at MercuryInteractive (acquired by HP), having led the companys QAorganization, participating in establishing Mercurys Software as aService (SaaS), as well as leading a Business Unit in Europe and Asia.Sasha played a key role in the development of Mercurys worldwideBusiness Technology Optimization (BTO) strategy and drove fieldoperations of the Wireless Business Unit, all while taking on the dutiesas the Mercurys top "guru" in quality processes and IT practicesdomain. In this capacity, Sasha has advised numerous Fortune 500companies on technology and process optimization, and in turn,acquired a comprehensive and rare knowledge of the market and industry practices.. http://il.linkedin.com/pub/sasha-gilenson/0/2bb/3b3 https://twitter.com/sgilenson Share this eBook! 27 www.evolven.com
  28. 28. HYBRID CLOUD INSIGHTS FROM THE EXPERTSAbout EvolvenAbout EvolvenEvolven redefines configuration management and change managementwith its groundbreaking Change & Configuration Monitoring solution.Evolven’s software-as-a-service solution enables companies todramatically increase the stability of their IT environments, reduce therisk of production outages, lower operating costs, and cut environmentincident investigation time and effort.Evolvens Change and Configuration Monitoringeliminates production outages. Really.Start a free trialwww.evolven.com/sign-up.html Share this eBook! 28 www.evolven.com