Cloud Migration - Issues And Developments
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong KongCloud Migration: Issues and DevelopmentsIsaac Odun-Ayo, Member, IAENG, Frank Agono, and Sanjay MisraAbstract- Cloud computing is a dynamic paradigm that isinfluencing activities in virtually all facets of the IT world. Ithas become quite easy to deploy applications on the cloud.Storage is also available based on user’s needs and can bescaled up or down as required by the user. Computingresources have also been made available on virtual machines.Furthermore, applications are available to users supplied bycloud providers. The activities on the cloud has made migrationto the cloud desirable to most organizations and enterprises.Adopting the cloud is expected to reduce cost and the need forinvestment in computing infrastructure. However, mostorganizations are still concerned about the likely challenges ofmigrating to the cloud. The goal of this paper is to provide aninsight into cloud computing with respect to migration issues.The paper discusses cloud computing and the benefits ofmigration. It also examines the challenges of migration.Furthermore, present issues of migration as espoused by theindustry are discussed. The survey observed that not much isbeing discussed in terms of current trends and procedures ofmigration.Index Terms - Cloud Computing, Migration, ServicesI. INTRODUCTION“CLOUD computing is a model for enablinguniversal, on-demand and convenient networkaccess to a shared pool of configurable computing resources(e.g., servers, applications, storage, networks and services)that can be quickly provisioned and released with little to nomanagement effort or service provider interaction” [1].Cloud computing involves providing resources to clients byservice providers over the Internet. Such resources could bein form of computing power, storage and user applications.Cloud computing provides immense benefits toorganizations and enterprises alike. Organisations do notneed to invest heavily on technical infrastructure because theinfrastructure is available with the Cloud service providers(CSP) [2]. This leads to a considerable reduction in thespending both on installation and maintenance of computinginfrastructure. Furthermore, services provided by a CSPallows an organisation to focus on ideas, training ofpersonnel and more innovative ways of doing things [3].Manuscript received December 05, 2017; revised January 22, 2018. Thiswork was supported in part by the Covenant University through the Centrefor Research, Innovation and Discovery (CUCRID).I. Odun-Ayo is with the Department of Computer and te Nigeria.( 2348028829456; Isaac.odun-ayo@covenantuniversity.edu.ng)F. Agono is with the Department of Computer and InformationSciences, Covenant University, Ota, Ogun State, Nigeria. (email:frankagono@gmail.com)S. Misra is with the Department of Electrical and ria(sanjay.misra@covenantuniversity.edu.ng).ISBN: 978-988-14047-8-7ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online)Cloud computing entails a user paying for only the workloador services utilized. This pay per use arrangement means thatorganizations will need to pay for resources utilized pertime. Users will again save huge amount that should havebeen invested in the cutting-edge technology being utilizedby the cloud service providers. Organisation will request forservice as the need arises, and reduce their demands as theneed reduces. [4] The obvious benefits associated with cloudcomputing has made cloud adoption or migration attractiveto organizations. Cloud migration is the process of partiallyor completely deploying an organisation resources andapplications to the cloud to be managed in any of the clouddeployment types [5]. Migration also involves moving anorganization’s applications from its data center to that of aCSP [6]. This could be accomplished using a private, public,community or hybrid cloud. Migration or cloud adoption canoccur in three forms based on the service types. Cloudcomputing has three service models, the Software-as-aService (SaaS), Platform-as–a–Service (PaaS) andInfrastructure–as–a–Service (IaaS). Using the SaaSplatform, a company may move an existing application to acloud environment [5]. Such applications are made availableto users online and users do not have to worry about thesoftware license. The PaaS enables users to develop anddeploy applications to a cloud environment utilizing theapplication programming interface provided by the CSP.IaaS allows migration of resources in terms of storage,compute power, virtual machines from on-premise forhosting by a ding, it is important to know if cloud adoptionwill be beneficial or otherwise. Some migration issues aretechnical, such as the performance of an application whenmigrated to the cloud, while issues of cost effectiveness of amigration process are also important [3]. In addition, issuesof security and networking is must be considered [6]. Cloudadoption may lead to exposing sensitive information aboutan organisation to the public, hence migration must becarried out with careful preparations [7]. The issues involvedwith migration can also be examined in terms of businessand technical factors, including the ease of implementation[8]. On the other hand, there is a high overhead involvedwith maintaining a data center. Such cost includes thelicensing cost, resources consumptions and supportarrangements required to sustain such centers [7]. For largeorganisations it may be sufficient to migrate only a part oftheir on-premise resources to the cloud.As new technology evolves, there is a substantial savingsby such organisation because they can leverage on using thecloud. For start-ups, the benefits of access to latest hardwareIMECS 2018
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong Kongand being able to jump start operations without investmentin a data center makes migration an attractive option. Fromthe foregoing, cloud adoption has obvious advantages anddisadvantages. The focus of this paper, therefore, is toexamine the process of cloud migration. Various aspects ofcloud adoption will be discussed. More importantly, therecent developments in the industry will be highlighted. Themotivation for this is to provide the requisite understandingto enable small and big enterprises decide on cloudadoption. The organisation of the remaining paper is asfollows, Section 2 describes related work, Section 3examines the process of cloud migration, Section 4 discussescurrent developments in cloud migration, and Section 5concludes and suggest further studies.II. RELATED WORKSIn [6], a view of cloud computing is discussedextensively. The main focus was that developers mustthoroughly consider cloud issues in terms of virtualisation inareas such as networking and storage. Both application andinfrastructure software including hardware must be plannedfor in terms of the dynamic nature of the cloud. In [5], therelevance of cloud computing is examined in the perspectiveof both the users and the cloud providers. The issues ofstorage, networking and migration in terms of cloudcomputing was discussed. In addition, the idea of integratingexisting system and technologies in the utilization of thecloud was examined. In [7], Cloud Computing – dApplications: A Survey is proposed. The approach was toexamine popular cloud platforms viz-a-viz what is offered.Some issues relating to cloud migration were also discussed.In [9], Cloud Computing: Issues and Challenges ispresented. The approach was to examine the relationshipbetween cloud, service-oriented and grid computing.Various issues relating to the adoption of cloud computingwas also discussed. In [8], Big Data and Cloud ComputingIssues is discussed. The main focus was the planning andsecurity issues associated with big data on the cloud.However, some other issues relating to general adoption ofcloud computing were discussed. In [10], Cloud Computingin Nigeria: Prospects, Challenges and Operation Frameworkwas proposed. The approach is to examine major obstaclesto the successful adoption of cloud computing in Nigeria. Aframework was proposed to mitigate the challengesmilitating against successful cloud migration in Nigeria.In [11], Cloud Computing –Its Prospects and Challengesis presented. The main focus of the paper was to examine theadvantages and disadvantages of utilizing the cloud. Somepossible solutions to the challenges of using the cloud werealso discussed. In [12], Cloud Computing Security Issuesand Challenges is discussed. The approach was to examinechallenges in the area of deployment and service delivery onthe cloud. Major issues that could prevent migration to thecloud were also examined. In [4], Cloud Computing: Issues& Challenges is examined. The main focus was on thecategories of areas to be considered to ensure successfuladoption of cloud computing. In [13], Cloud Computing:Challenges and future directions is presented. The approachISBN: 978-988-14047-8-7ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online)was to discuss the benefits associated with cloud computingand the attendant risks. Thereafter various ways to makecloud computing attractive were proposed. In addition,suggestions were made in terms of government reforms. In[2], Security Analysis in the Migration to CloudEnvironments is proposed. The focus is the security issuesrelated to cloud migration process. Various approaches wereanalyzed in terms of the secured nature of migrating aprocess to the cloud. In [14], a five-phased approach for thecloud migration is presented. The paper provides an insightof migration issue with a view to guiding organisations interms of migration. It considers the migration concerns as itrelates to the type of enterprise that may intend to migrate tothe cloud. In [15], a comparison of on-premise to cloudmigration approaches is presented. Migration to the cloud isexamined based on the various services available in thecloud. The role of the various actors involved in migration isalso discussed. In [16], application migration to cloud: ataxonomy of critical factors is proposed. The paperdiscussing experiences in migration considering theprogramming and storage environment. A cost-benefitanalysis was done to enable consumers decide on migrationissues. In [17], Cloud Computing for Higher EducationInstitutes: Architecture, Strategy and Recommendations forEffective Adaptation is presented. The main focus is cloudcomputing utilization in tertiary education. The paperproposes five steps for seamless adoption of cloudcomputing.III. PROCESS OF CLOUD MIGRATIONA. Types of cloud migrationA subtle generalization of cloud migration types ispresented below, in order to provide distinction between theseveral approaches to cloud migration available [36]. Replace activities with cloud capabilities: this isthe least type of migration. In this technique,one or more activities (components) arereplaced by cloud enabled services. Partial migration of some of the applicationfunctions to the cloud. This entails moving oneor more application layers or a set ofcomponents from one or more layers to thecloud. Migrating the whole software application stackto the software. This type entails the enterprisemaintain hardware components in-house andthen enjoying software interactions from thecloud. To ‘cloudify’ the application entails a completemigration of the entire application activitiesand components.B. Migration StrategiesWith regards to the classification of migration of thevarious cloud computing service models, there exists varyingclassification cases in literature. This section presents theclassifications highlighted in [37] Migration to IaaS: this strategy enablesmigration only by porting legacy systems to theIMECS 2018
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong Kongcloud. This migration strategy is relatively easyand cost effective, and it’s the most adoptedamongst enterprises. Migration to PaaS: this is achieved by migratingthe legacy system to the cloud using systemrefactoring. In this method, the legacy systemrequires modification to fit the target platform,inability to properly modify the legacy systemto fit the target platform can result in missingcapabilities, resulting in risk. Migration to SaaS: this is divided into three (3)sub strategies, namely replacing by SaaS,revising based on SaaS and reengineering toSaaS. In the first sub-strategy, commerciallycloud delivered software completely replaceslegacy systems. This strategy greatly reducesmigration efforts. In the second sub-strategy,only a portion of the functionality of legacysystems would be replaced by cloud services.Then in the third and final sub-strategy, legacysystems are reconfigured and reengineered intothe cloud service. This strategy is usually verychallenging, and may require redesigning thestructure, reverse engineering, and so on.Comparison and analysis shows that the seemingly degreeof ease or complexity in setting up and running any of themigration strategy is not enough reason to choose onemethod over the other, the choice of which migrationstrategy to use must also accommodate considering theability of the enterprise to perform any requirementsinvolved by any of the cloud migration strategy.C. Phases of cloud migrationFive phases of cloud adoption process were suggested in[8] Feasibility study: this helps to determine the costand technical issues that must be resolved beforecloud adoption. A thorough analysis must becarried out to determine if the cost and technicalconsiderations are optimum. Requirement analysis and planning: in this instance,the nature of applications and data to migrate to thecloud is considered. Again, once a decision is madeto migrate an application, a cost benefits analysis isdone to ensure it is worthwhile. Migration: all simple applications to migrate will bemigrated and tested, while more complexapplications will involve a more rigorousdeployment process. Testing and deployment: a parallel approach issuggested in which application or processesmigrated to the cloud are still available in thepremises data centre. However, applications on thecloud will be tested with in-house data andobservations made to take care of anydiscrepancies. Monitoring and maintenance: after migration it isessential to keep monitoring the process for securityand other reliability issues. Cloud monitoring toolsISBN: 978-988-14047-8-7ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online)are available with some CSPs that can be utilized atthis stage.D. Challenges in Cloud MigrationFive major migration challenges were identified in theIDC survey of 2008.1) SecuritySecurity has always been a major concern with migratingto the cloud. The concern is premised on the issue of data instorage. It is believed it can be a subject of integrity andvalidity issues. Loss or hacking into an organization’sdatabase could result in enormous loss. In addition, multitenancy allows the sharing of physical machine using theprocess of virtualization [4]. A security issue could arisethrough multi-tenancy, if a malicious user shares resourceswith a regular user. Data belonging to the regular user couldbe affected and reputation issues could also arise.2) Costing ModelThe costing model focuses on communication,computation and integration [4]. It may be cheaper tomigrate to the cloud in terms of savings or infrastructure, butissues of data transfer and pay-per-use of resources may leadto higher cost. Computer resources may be cheaper for CPUintensive tasks, while other smaller applications may not becheaper if savings in cloud usage is not lower than datacommunications costs [4]. Data integration resulting fromdata utilization among various clouds can also lead toincreased cost of migration.3) Charging ModelThe process of elasticity has made analysis of cost moredifficult unlike when computing for static resources. Aproper charging model must incorporate all aspects of cloudcomputing. The cost of redeploying and redesigningapplications by SaaS providers based on the need for multi–tenancy could be very high. Overall, employing an optimumcharging model is important for both cloud user andproviders.4) Service Level AgreementsCloud consumers do not have control over the resourcesbeing provided by the CSP. There must be a means ofensuring that service providers meet their obligations to theconsumers. SLA provides a means of striking this balance,but it is important that they are simple to understand and theproviders ensure trust in terms of services provided. Basedon security concerns, organisations are not subscribingadequately to IaaS as compared to SaaS. Storage and serverutilization is low compared to collaboration andmanagement applications.IV. CURRENT DEVELOPMENTS IN CLOUD MIGRATIONActivities with respect to cloud adoption is very dynamic.There are developments relating to cloud computing on aregular basis. It has been observed that most enterpriseapplications are not meant for the cloud. Those that can beported to the cloud required the same management they werereceiving while at the on-premise data center. However,most infrastructure needed to support ported application arenow available on public cloud [22]. Moving applications tothe cloud now provides opportunities to optimize applicationIMECS 2018
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong Kongand network access. Identity management also needs to becentralized, but access linked into all required locations. Inaddition, controls that identify a user’s location and devices,combined with options for authentication and a one-timepassword can improve security of an organization’s data.Outsourcing of responsibility on the cloud has led to lossof control by the user, but monitoring applicationperformance can mitigate this risk Disaster recovery andbusiness continuity processes is also important. Risk andReturn on investment must also be considered. Utilizingmulti region, multi-vendor solutions should be used in termsof time and expenses. Higher bandwidth, low latencyconnection between locations, and consistency model, couldenhance storage and distribution of geographically disperseddata. Services providers offer dedicated links for privacyguaranteed bandwidth and reduced price. However,organisations are now co-locating equipment in cloudconnected environment called cloud exchange that offer highspeed connection to multiple cloud providers [22]A.Steps before MigrationThere is a mix of infrastructure for managing an enterprisedata on the cloud. Currently, 74% of enterprise manageddata are on multiple public IaaS such as Azure, Google, andAWS. In addition, the average enterprise has more than 900different cloud hosted applications serving differentfunctions. Therefore, while moving on-premise secondarydata to cloud storage, it is necessary to maximize costsavings and minimize risk. [23] The first step is to know what data is available to anenterprise. It is believed that 52% of an enterprisedata is dark, hence there is no knowledge as to if thedata is useless or priceless. According to Gartner, itcosts about 5M to store and manage 1PB ofenterprise data. 41% of dark data is stale, and 15% isancient, that is, not modified within 3-7years.Therefore, it is essential to classify data to avoidsending dark data to the cloud and waste resources. The second step is to know where an enterprise data is.Data must not be put blindly into the cloud to avoidunnecessary duplication. It is believed that 33% ofdata in the average global enterprise is duplicated.Knowing what data and where it exists can helpenterprise prepare for the EU’s General DataProtection Regulation (GDPR) which takes effectMay, 2018.An enterprise must be sure that application servers willfunction and perform well in the cloud. It is possible to hostan application server with a high compute and memoryresources, but if the bandwidth is not commensurate, it willaffect performance [3]. Application must also be portablebefore it is migrated to the cloud. An application that hasexternal dependencies such as Active Directory dependencyor requires access to on-premise SQL server databasecomplicates migration. Another important consideration isscalability. It is true that a CSP can host hardware–intensiveworkloads with unlimited scalability, but it also comes at aprice. IaaS providers charge customers a resourcesconsumption based-monthly fee [3]. Also, it is much easierISBN: 978-988-14047-8-7ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online)to move on-premise workload to the cloud if the servershave been virtualized.B. Current TrendsAccording to a recent IDG Enterprises Survey in [24], ITcompanies have moved 45% of their applications andcomputing infrastructure to the cloud already. Of the 925 ITdecision makers, 70% have already moved one applicationor a portion of their infrastructure to the cloud. Currently,the average company has 45% of its IT environment in thecloud with 23% in private cloud 15% in public cloud and7% in hybrid cloud. By the end of 2017, average ITadoption was expected to be 59%, with 28% in privatecloud, 22% in public cloud and 10% in hybrid cloud. Theaverage company planned to allocate 45% of its cloudbudget to SaaS, 30% to IaaS 90% to PaaS and 6% to othersas-a-service model. The major reason for investing in cloudsolution include lower total cost of ownership, replacing onpremise legacy system, business continuity anddevelopment.According to the 2017 cloud migration survey report byAmazon Web Services [25], 28% of computing resourcesare hosted in the public cloud, 39% use VM, 23% usephysical machines and 10% hosted in the private cloud. Inaddition, public cloud is expected to grow by 28% yearover-year and private cloud by 15%. Virtual machine andphysical machine are to decline by 20% and 18%respectively. The top three considerations for choosing acloud platform are price (18%), security and compliance(17%) and reliability (17%). While the top three drivers formigration are cost (23%), security (20%) and highavailability (16%).V. ANALYSIS OF ISSUESTable I highlights certain topics worthy of discussion.These topics represent criteria used to compare how muchresearch has gone into discussing certain issues in cloudmigration. The analysis highlights four areas (challenges incloud computing, phases of cloud migration, challenges incloud migration, and current trends in cloud migration).Several literature were considered in coming up with thediscussions and inferences. The authors are listed in noparticular order. A total of 29 articles from different authors,spanning the four areas were reviewed and discussed insubsequent paragraphs.A. Challenges in cloud computing[21] and [9] discusses the security challenges of cloudcomputing for the public sector. The author highlightsperformance, availability, how to integrate with the in-houseICT, ability to customize, on-demand cost, cost of returningin-house, regulatory requirements and sufficient CSPs asissues affecting cloud computing adoption. In [7][4] theauthors discussed several generic issues associated withcloud computing including, privacy, reliability, legal issues,compliance, freedom, long term viability and cloudinteroperability.IMECS 2018
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong KongR. Craig et al (2009)S. Mehfuz and G. Sahoo(2012)Current trends incloud migrationChallenges in cloudmigrationReferencesPhases of cloudmigrationChallenges in cloudcomputingTABLE I.COMPARATIVE ANALYSIS OF CLOUD MIGRATION ISSUESxxxxF. Sabahi (2011)S. Kumar and R. H.Goudar (2012)V. H. Pardeshi (2014)xxxxxA. Youssef (2012)C. F. Obodoeze, F.Okoye, and T. C. Asogwa(2014)V. Pardeshi (2014)xxxxxxxxD. G. Rosado, R. Gómez,D. Mellado, and E.Fernández-Medina (2012)M. Sajid and Z. Raza(2013)Mrs. Papri Das and Dr.Pravin Bhatawala (2014)Media.techtarget.com(2015)IDG Executive Summaryxx[5], presents a future situation where all processing powerwould be moved to the cloud, and users would only havethin clients utilizing resources acquired from the cloud. [35]focuses on the process of shipping disk drives to cloudcomputing as a solution to the processing problem. Shippingdisk drives is a process where cloud service providerreceives disk drives from an enterprise and then transfers thedata to a local server. [27] presents the adoption of SaaS fore-government on a hybrid cloud type. [33] presents the useof open source cloud computing, which adopts the use of theHadoop framework, which divides the application intodifferent clusters and assigns them to various independentnodes to carry out the work.From the foregoing, virtually all the papers considered theissue of challenges of cloud migration. The least focus wason the phases of cloud migration. It was expected that mostpapers would also examined current trends to serve asstimulus for organizations intending to migrate.VI. CONCLUSIONxS. O. Kuyoro, F. Ibikunle,and O. Awodele (2010)Odun-ayo et al (2017)S. Jodhpur, and J.Rajasthan (2015)K. Choo (2010)T. Dillon, C. Wu, and E.Chang (2010)[7], [35], [9] shows that challenges relating to the adoptionof cloud migration includes security, costing model,charging model and service level agreement. [24] explainsthat while cloud adoption continues to rise, there is aconstant increase in cloud tools and services which providesorganizations more cloud choices than ever before. It alsostated that more than half of the companies in the US arealready migrating majority of their systems or plan to do soin the coming years. [12] discusses cloud migrationchallenges relating to particular cloud deployment models.D. Current trends in cloud migrationxA. Weiss (2007)D. Agrawal, S. Das, andA. El Abbadi (2010)C. Challenges in cloud migrationxxxxxA. Khajeh-Hosseini, I.Sommerville, J. Bogaerts,and P. Teregowda (2011)xxV. Vidhya (2013)xCloud computing is providing reliable, available andcost–effective computing resources to users. In view of this,cloud adoption has been on the increase. The cloud adoptionprocess was discussed showing the steps that can beemployed and the challenges of cloud migration. Based onthe fact that cloud computing is evolving at a dynamic pacethe current trend in the cloud computing was examined usingindustry surveys carried out by IDG. A future work could beto carry out an analysis of the drivers for cloud migration.ACKNOWLEDGMENTSWe acknowledge the support and sponsorship provided byCovenant University through the Centre for Research,Innovation and Discovery (CUCRID).B. Phases of cloud migrationIn [14] a five-phased model for migration, is highlightedwhich includes feasibility study, requirements analysis andplanning, migration, testing and deployment, monitoring andmaintenance as components of cloud adoption. [17] statedthat the components of phased cloud migration model are thepreparation phase, analysis phase, migration to cloudplatform, concluding the cloud migration, maintenance andvendor management. [36] presented the five stages for cloudadoption based on Rogers Innovation Diffusion Model.ISBN: 978-988-14047-8-7ISSN: 2078-0958 (Print); ISSN: 2078-0966 (Online)REFERENCES[1][2][3][4][5]Mell, P., Grance, T.: The NIST Definition of Cloud Computing. NISTSpecial Publication 800-145 2011D. G. Rosado, R. Gómez, D. Mellado, and E. Fernández-Medina,“Security Analysis in the Migration to Cloud Environments,” Futur.Internet, vol. 4, no. 4, pp. 469–487, 2012.Project Success Plan: Cloud Migration. A Guide for Transitioning toa Cloud-based Infrastructure. TechTarget Publication 2015M. Sajid and Z. Raza, “Cloud computing: Issues & challenges,” Int.Conf. Cloud, Big Data and Trust. December 2013, pp. 34–41.A. Weiss, “Computing in the Clouds,” netWorker, vol. 11, no. 4, pp.16–25, 2007.IMECS 2018
Proceedings of the International MultiConference of Engineers and Computer Scientists 2018 Vol IIMECS 2018, March 14-16, 2018, Hong [31][32]M. Armbrust et al., “of Cloud Computing,” Commun. ACM, vol. 53,no. 4, pp. 50–58, 2010.S. Kumar and R. H. Goudar, “Cloud Computing – Research Issues,Challenges, Architecture, Platforms and Applications: A Survey,” Int.J. Futur. Comput. Commun., vol 1, no. 4, pp. 356–360, 2012.O. Awodele, A.A. Izang, S.O. Kuyoro, F.Y. Osisanwo.: Big Data andCloud Computing Issues’, International Journal of ComputerApplications. (0975 – 8887) Volume 133 – No.12, January 2016.T. Dillon, C. W. C. Wu, and E. Chang, “Cloud Computing: Issuesand Challenges,” Adv. Inf. Netw. Appl. (AINA), 2010 24th IEEE Int.Conf., pp. 27–33, 2010.C. F. Obodoeze, F. Okoye, and T. C. Asogwa, “Cloud Computing inNigeria: Prospects, Challenges and Operation Framework,” Int. J.Eng. Res. Technol., vol. 3, no. 6, pp. 2107–2113, 2014.Mrs. Papri Das and Dr. Pravin Bhatawala, “Cloud Computing –ItsProspects and Challenges,” IOSR J. Comput. Eng., vol. 16, no. 4, pp.15–20, 2014.S. O. Kuyoro, F. Ibikunle, and O. Awodele, “Cloud computingsecurity issues and challenges,” MIPRO, 2010 Proc. 33rd Int. Conv.,no. June, pp. 344–349, 2010.K. Choo, “Cloud computing: challenges and future directions,”Trends Issues Crime Crim. Justice, no. 400, pp. 1–6, 2010.S. Mehfuz and G. Sahoo, “A five-phased approach for the cloudmigration,” Int. J. Emerg. Technol. Adv. Eng., vol. 2, no. 4, pp. 286–291, 2012.C. Pahl, H. Xiong, and R. Walshe, “A comparison of on-premise tocloud migration approaches,” i
migrating to the cloud. The goal of this paper is to provide an insight into cloud computing with respect to migration issues. The paper discusses cloud computing and the benefits of migration. It also examines the challenges of migration. Furthermore, present issues of migration as espoused by the industry are discussed.
Data Migration Planning Analysis, Solution Design and Development Mock Migration Pilot Migration Released Data Migration Active Data and User Migration Inactive Data Migration Post Migration Activities Small Bang The details for each step include: Data Migration Planing - Develop the migration strategy and approach, and define the scope,
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A New Migration Testing Strategy Pre-Migration Testing The concept of pre-migration testing is not often covered during migration planning. The professionals involved in migration planning are not much aware of comprehensive pre-migration testing and the value it can add to a migration and particularly those migrations that are considered complex.
Migration overview In the context of Migration Manager, migration is the process of promoting . A migration group can be either internal or user-defined. Internal migration groups are included with the product and are linked to other logically related migration groups called dependencies. You cannot modify internal migration
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HOW WE TALK ABOUT MIGRATION: THE LINK BETWEEN MIGRATION NARRATIVES, POLICY, AND POWER HOW WE TALK ABOUT MIGRATION: THE LINK BETWEEN MIGRATION NARRATIVES, POLICY, AND POWER 6 There is often a tipping point when feelings of acceptance shift and feelings of insecurity begin to dominate. Welcoming stances toward migration are not always permanent.
A data center migration is the movement of one (or more) . - Final Data Migration Plan - Test Migration - Migration - Post Migration Transition - 24/7/365 Support . hand and are using it relative to the migration project. You would be amazed how many people never ask, "Will this work for us in year two and .
The API is most useful when there is a need to automate a well-defined workflow, such as repeating the same tasks to configure access control for new vRealize Operations Manager users. The API is also useful when performing queries on the vRealize Operations Manager data repository, such as retrieving data for particular assets in your virtual environment. In addition, you can use the API to .
