Cloud Computing Principles and Paradigms: 11 t-systems cloud-based solutions for business applications - copy


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  • T-Systems is one of Europe’s largest ICT service providers. It offers a wide range of IT, telecommunications, and integrated ICT services, and it boastsextensive experience in managing complex outsourcing projects. The company offers hosting and other services from its 75 data centers with over 50,000servers and over 125.000 MIPS—in Europe, Asia, the Americas and AfricaT-Systems operates information and communication technology (ICT) systems for multinational corporations and public sector institutionsT-Systems approaches cloud computing from the viewpoint of an organization with an established portfolio of dynamic, scalable services delivered via networks.Cloud computing is an opportunity for T-Systems to leverage its established concept for services delivered from data centers.Cloud computing entails the industrialization of IT production, enabling customers to use services and resources on demand. Business, however, cannot adopt wholesale the principles of cloud computing from the consumer world. Instead, T-Systems aligns cloud computing with the specific requirements of large enterprises. This can mean rejecting cloud principles where these conflict with statutory requirements or security imperatives.
  • * Changing MarketToday’s markets are increasingly dynamic. Products and skills rapidly become obsolete. So incumbents need to find and implement new ideas at an ever faster pace. Also, new businesses are entering the market more rapidly, and they are extending their portfolios by forging alliances with other playersThe Internet offers the opportunity to implement new business models and integrate new stakeholders into processes.Markets and market participants are changing at an unprecedented pace. At the same time, markets have become more flexible. Against this background, companies not only need to scale up, but also to scale down.Today’s legacy ICT infrastructures have evolved over many years and lack flexibility. Moreover, few organizations can afford the capital investment required to keep their technology up to date.* Increased Productivityenterprise ICT and business processes are closely interwoven. As a result, ICT is now a critical success factor.The impact of fluctuations in the quality of ICT services (for example, availability) is felt immediately.The demands are also increasing when it comes to teamwork and collaboration. Solutions not only have to deliver speed plus ease of use, they also haveto support simultaneous work on the same documents. (anywhere access, avoidance of data redundancy, etc.)* Cost PressurePrices for goods and services are falling at the same time that the costs for power, staff, and raw materials are rising.companies have to improve their cost structures.replacing fixed costs with variable costs can also contribute significantly—without resorting to sensitive measures such as layoffs. This improves liquidity.flexibility of the ICT landscapes. reduce administration and energy costs. However, these savings must not be allowed to impact the quality of ICT services.The high quality of the resulting ICT services increases efficiency and effectiveness and enhances reliability, thereby cutting costs and improving competitiveness.* SolutionIn other words, today’s businesses expect a great deal from their ICT. It not only has to open up market opportunities, it also has to be secure and reliable.This means that ICT and associated services have to deliver speed, flexibility, scalability, security, cost-effectiveness, and transparency. And cloud computingpromises to meet all these expectations.
  • Expectations differ considerably, depending on company size and industry.companies all face the same challenges: the need to penetrate new markets, to launch new services, to supply sales models, or to make joint offerings with partners. This is where dynamic ICT delivers tangible benefits.Industrialization provides the basis for ICT services that are dynamic, fast, in line with real-world requirements, and secure and reliable. ICT services of this kind (dynamic) are the foundation of a cloud that provides services on demand.Proven concepts and methodologies from the manufacturing industry can be applied to ICT:* IndustrializationStandardization and automation greatly reduce production costs and increase the efficiency and flexibility of ICT.However, they come at a price: There is less scope for customization.In the world of ICT, there is a clear conflict between customization and cost. Standardization has the appeal (particularly for service providers) of cutting ICT production costs.At the same time, standards-based modularization enables new forms of customization.* ModularizationModular production enables ICT to be tailored to customers’ specific requirements - in conjunction with standardization.Modularization is essentially a set of standardized individual modules that can be combined. The resulting combinations give rise to sophisticated applications tailored to the needs of the specific company. Standardized interfaces (e.g., APIs) between individual modules play a pivotal role. And one of the great strengths of modules is their reusability.One example of modularization in a different context is combining Web services from various sources (mashups). The benefit of modular services is that they can be flexibly combined, allowing standard offerings to be tailored to specific requirements. they prevent customized solutions from straying too far from the standard, which would significantly drive up the costs of later modifications.* Integrated creation of ICT servicesEach of the elements outlined above can have significant advantages. But only an integrated approach to creating ICT services—combining standardization,automation and modularization—can deliver the entire range of benefits.In the context of outsourcing, this form of industrialization yields its full potential when providers and users have a close, two-way relationship with corresponding connectivity.
  • * QualityIf consumers’ Internet or ICT services are unavailable, or data access is slow, the consequences are rarely serious. But in business, the nonavailability of a service can have a grave knock-on effect on entire mission-critical processes—bringing production to a standstill, or preventing orders from being processed.Cloud-service providers therefore have to offer end-to-end availability, backed by clearly defined SLAs.The specific quality requirements are determined by weighing up risk against cost.As a rule, higher service levels come at a higher price.So the quality question is not about combining the highest service levels, but about selecting the right levels for each service.* SecurityIT decision-makers cited security and loss of control over data as the key drawbacks of cloud computing. However, for businesses looking to deploy a form of cloud computing, legal issues (e.g., privacy and liability) are considerably more important.
  • Agility at the infrastructure level alone is not enough to provide fast, flexible ICT services. Other dynamic levels and layers are also required (Figure 11.2).Ultimately, what matters to the user is the flexibility of the system or service as a whole. So service quality is determined by the slowest component.Flexibility at all levels is a basic requirement for cloud computing.Adaptable processing and storage resources at the computing level must be supported by agile LAN and WAN infrastructures. Flexibility is also important when it comes to application delivery, scalability, and extensibility via functional modules. Management processes must allow for manual intervention, where necessary, and automatically link the various layers. These factors enable the creation of end-to-end SLAs across all components.When customers opt for a dynamic service, they require an SLA that covers not only individual components, but also the service as a whole.
  • T-Systems delivers Dynamic Services from multiple data centers around the world (Figure 11.5). These are mostly designed as twin-core facilities; in other words, each location has two identical data centers several kilometers apart.
  • The computing pool is based on server farms located in different data centers. Logical server systems are created automatically at these farms.The configuration management database (CMDB) plays a key role in computing resource pools (Figure 11.3). This selects and configures the required physical server (1). Once a server has been selected from the pool, virtualization technology is selected with the relevant application and the demands it has to meet (2). At the same time, the configuration requirements are sent to the network configuration management system (3) and to the storage configuration management system (4). Once all the necessary elements are in place, the storage systems are mounted on the servers, after which the operating-system images are booted (5).
  • To limit the number of operating systems and releases—and minimize related administrative effort—only one version of each operating system is maintained.Decoupling operating systems from applications plays a key role here, because it reduces both initial and subsequent application-provisioning time (following a failure, for example). Making applications available is simply a matter of mounting them. This approach has other advantages: Applications can quickly be moved from one server to another, and updates can be managed independently of operating systems.
  • The computing and storage modules are integrated via an automatically configured LAN or corresponding virtual networks (VPNs).Networks are segregated from each other by means of VPN technology.Backup-integrated storage eliminates the need for a separate backup network.
  • Work on projects often entails frequent changes in user numbers. As a result, enterprises need flexible means of handling communications and collaboration. T-Systems offers the two leading e-mail systems, Microsoft Exchange and IBM Lotus Domino via Dynamic Services, ensuring their rapid integration into existing environments.-----------ERP and CRM. Dynamic systems are available to support core ERP and CRM processes. T-Systems offers SAP and Navision solutions in this space.-----------Configured systems that are not currently required can be locked and mothballed. So when computing resources are no longer needed, no further costs are incurred. That is the advantage of Dynamic Services for developers.-----------
  • A mid-sized furniture manufacturer with over 800 employees leverages dynamic infrastructure services.In average, it makes some 1500 couches and armchairs daily.In summer months, this figure is almost halved—and use of the company’s in-house IT falls accordingly.In June 2005, the IT department outsourced data backup and provisioning of mainframe resources to T-Systems. The service provider now provides these as services, on a pay-per-use basis.As a result, the furniture manufacturer no longer has to maintain in-house IT resources sized for peak loads. Instead, its IT infrastructure is provided as a service [infrastructure as a service (IaaS)].If the data volume or number of users suddenly rises or falls, the company can scale its resources up or down—and costs increase or decrease accordinglyit benefits from a solution that is always at the leading edge of technology, without having to invest in that technology itself.
  • cost and market pressures that call for increased productivity. While conventional outsourcing can help enterprises cut costs, it cannot deliver the flexibility they need. And greater flexibility brings even greater savings. Cloud computing poses a challenge to traditional outsourcing models.Cloud computing makes for a more straightforward and flexible relationship between providers and their customers. Contracts can be concluded more rapidly, and resources are available on demand. What’s more, users benefit from end-to-end services delivered dynamically in line with their specific business requirements. And companies only pay for the services they actually use, significantly lowering IT investment. When it comes to selecting a sourcing model, cost and flexibility are only two of the many factors that have to be taken into account. Further important aspects are data privacy, security, compliance with applicable legislation, and quality of service. The public cloud cannot offer a solution to these issues, which is why private clouds are well worth considering.Services that are not mission critical do not require robust service levels and can be delivered via the public cloud. But business-critical IT processes call for clearly defined SLAs, which, in turn, pushes up costs. Private clouds are an effective way of meeting these requirements.
  • Cloud Computing Principles and Paradigms: 11 t-systems cloud-based solutions for business applications - copy

    1. 1. 27 April 2013 Cloud Computing: principles and paradigms - Part III 1 11-T-SYSTEMS’ CLOUD-BASED SOLUTIONS FOR BUSINESS APPLICATIONS MICHAEL PAULY Cloud Computing Principles and Paradigms Presented by Majid Hajibaba
    2. 2. 27 April 2013 Cloud Computing: principles and paradigms - Part III Introduction • T-Systems • ICT service provider • Offers IT, telecommunications, integrated ICT services • 75 data center • 50,000 sever • Europa, Asia, America, Africa • T-Systems uses Cloud Computing • leverage its services delivered from data centers • aligns cloud computing with the specific requirements • rejecting cloud principles where • conflict with statutory requirements • conflict with security imperatives Presented by Majid Hajibaba 2
    3. 3. 27 April 2013 Cloud Computing: principles and paradigms - Part III 3 Enterprise ~ Cloud Computing Presented by Majid Hajibaba
    4. 4. 27 April 2013 Cloud Computing: principles and paradigms - Part III Dynamic ICT Services • Companies Challenge • need to penetrate new markets • to launch new services • to supply sales models • to make joint offerings with partners • Solution • Dynamic ICT Services (cloud) • Features • Industrialization • Standardization • Automation • Modularization • Integrated creation of ICT services Presented by Majid Hajibaba 4
    5. 5. 27 April 2013 Cloud Computing: principles and paradigms - Part III 5 IMPORTANCE OF QUALITY AND SECURITY IN CLOUDS • Quality • End-to-End SLA • Availability • Important for business • Not serious for ICT services • Weighing up risk against cost • higher service levels come at a higher price • Quality: right levels for each service NOT highest levels • Security • Compliance • Key drawback of cloud computing • legal issues (e.g., privacy and liability) Presented by Majid Hajibaba
    6. 6. 27 April 2013 Cloud Computing: principles and paradigms - Part III Dynamic Data Center • Produce Business-Ready, dynamic ICT Services • Flexibility across all modules Management with manual intervention Flexible Functional modules Adaptable Processing and storage resources Agile LAN,WAN Presented by Majid Hajibaba 6
    7. 7. 27 April 2013 Cloud Computing: principles and paradigms - Part III 7 Toward Dynamic ICT Services • Dynamic (flexible) ICT Service 1. Standardize customer’s environment • Software : single operation system • Hardware : like specific processor generation 2. Technical consolidation • Reduce servers • Reduce storages • Use identical backup/restore mechanism • Close small data center 3. Separating logical from physical • Use virtualization • Process Automation Presented by Majid Hajibaba
    8. 8. 27 April 2013 Cloud Computing: principles and paradigms - Part III Core Cloud Modules • T-Systems • Core cloud modules • Computing • Storage • Communication Presented by Majid Hajibaba 8
    9. 9. 27 April 2013 Cloud Computing: principles and paradigms - Part III Computing CMDB Role Presented by Majid Hajibaba 9
    10. 10. 27 April 2013 Cloud Computing: principles and paradigms - Part III Computing in Cloud • Advantages over conventional ICT environments • Switch customer apps. From server to server • CMDB updated automatically • Enhanced monitoring and reporting • Quality management • Resource planning • Maintain one version of each operating system • To limit number of OS’s • To minimize administrative effort • Virtualized applications • Reduce provisioning time • Quick move among servers • Update independently from OS Presented by Majid Hajibaba 10
    11. 11. 27 April 2013 Cloud Computing: principles and paradigms - Part III Storage • IP-based Storage system • use NAS, neither SAN nor DAS • Linked via Gbit Ethernet • Using fiber channel • BIS • Backup Integrated Storage • Couple backup to storage • Snapshotting • Archive • Different fire zone • Initiated from • Applications • Document management system Presented by Majid Hajibaba 11
    12. 12. 27 April 2013 Cloud Computing: principles and paradigms - Part III Storage resources Presented by Majid Hajibaba 12
    13. 13. 27 April 2013 Cloud Computing: principles and paradigms - Part III Communication • Integrate storage and computing modules • Segregate network by VPN • Customer Network • Customers : Via internet or VPN • Companies : Via unique IP address • Protected by clustered firewalls • Storage Network • A separate storage network • Accessing OS images, application and customer data • Administration Network • Segregated from all others networks • Has no access to customer’s data Presented by Majid Hajibaba 13
    14. 14. 27 April 2013 Cloud Computing: principles and paradigms - Part III Dynamic Applications for Enterprises (T-System) Enterprise Requirement • Communication and collaboration • frequent changes in user numbers • need flexible means of handling communications and collaboration • T-Systems offers two leading email systems via dynamic service • ERP and CRM • Supported by Dynamic Systems • T-Systems offer SAP and Navision • Development and Testing • Use configured systems that are not currently required • Use computing resources are no longer needed • Middleware • Platform as a Service (PaaS) • T-Systems middleware : dynamic database, web server, portal • Front-Ends and Devices • Such as Office applications • T-Systems offers via dynamic desktop service Presented by Majid Hajibaba 14
    15. 15. 27 April 2013 Cloud Computing: principles and paradigms - Part III T-Systems Case Study • Dynamic Infrastructure Service • A mid-sized furniture manufacturer • In average 1500 couches daily • Halved in summer • Outsource resource provisioning to T-Systems (use IaaS) • Scale up or down according number of users • Move at edge of technology • T-System offers private cloud • T-Systems benefit from VMware vCloud Presented by Majid Hajibaba 15
    16. 16. 27 April 2013 Cloud Computing: principles and paradigms - Part III 16 Summary • Cost and Market pressure > call increased productivity • Conventional Outsourcing • Cut cost • No flexibility • Cloud Computing • Flexibility • Straightforward relationship between providers and their customers • On demand resource • Pay per use • Outsourcing factors • Cost, flexibility, privacy, security, legislation, QoS • Solution: • Private cloud: mission-critical systems • Public cloud: non mission-critical and not require service level • Hybrid cloud: large company Presented by Majid Hajibaba
    17. 17. 27 April 2013 Cloud Computing: principles and paradigms - Part III END T-systems’ Cloud-based Solutions For Business Applications 17