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CLOUD COMPUTING Trends to Watch for Libraries Marshall Breeding Director for Innovative Technology and Research Vanderbilt University Library Founder and Publisher, Library Technology Guides http://www.librarytechnology.org/ http://twitter.com/mbreeding Internet Librarian 2010 Oct 26, 2010
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Summary One of the major transitions in technology involves increased adoption of computing models that involve use of hardware and software outside the library. It’s a seminal technology change as important as the shift from mainframes to client/server architectures. We’re hearing more about application service providers, software-as-a-service, storage-as-a-service, and platform-as-a-service. How does OCLC’s global WorldCat platform fit into the mix? What is the difference between public and private clouds? What are the issues for libraries in the deployment of cloud computing in terms of cost, efficiency, privacy, control, and security? Marshall Breeding clarifies the concepts of cloud computing with examples of interest to libraries.
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Continuum of Abstraction Locally owned and installed servers Co-located servers Co-located virtual servers Web hosting Server hosting services Application Service Provider Software-as-a-service Infrastructure-as-a-service Platform-as-a-service The Advance of Computing From the Ground to the Cloud Computers in Libraries, December 2009 http://www.librarytechnology.org/ltg-displaytext.pl?RC=14384
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What is Cloud computing? Wikipedia: “Cloud computing is Internet-based computing, whereby shared resources, software, and information are provided to computers and other devices on demand, like the electricity grid.” http://en.wikipedia.org/wiki/Cloud_computing
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What is Cloud computing? VMWare: “Cloud computing is a new approach that reduces IT complexity by leveraging the efficient pooling of on-demand, self-managed virtual infrastructure, consumed as a service” http://www.vmware.com/solutions/cloud-computing/
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Cloud illustration http://soacloudcomputing.blogspot.com/2008/10/cloud-computing.html
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Cloud computing as marketing term Cloud computing used very freely, tagged to almost any virtualized environment Any arrangement where the library relies on some kind of remote hosting environment for major automation components Includes almost any vendor-hosted product offering
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Cloud computing – characteristics Highly abstracted computing model Utility model Provisioned on demand Scaled according to variable needs Discrete virtual machines Compute cycles on demand Storage on demand Elastic – consumption of resources can contract and expand according to demand
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Fundamental technology shift Mainframe computing Client/Server Cloud Computing http://www.flickr.com/photos/carrick/61952845/ http://soacloudcomputing.blogspot.com/2008/10/cloud-computing.html http://www.javaworld.com/javaworld/jw-10-2001/jw-1019-jxta.html
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Gartner Hype Cycle 2009
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Gartner Hype Cycle 2010
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Local Computing Traditional model Locally owned and managed Shifting from departmental to enterprise Departmental servers co-located in central IT data centers Increasingly virtualized
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Virtualization The ability for multiple computing images to simultaneously exist on one physical server Physical hardware partitioned into multiple instances using virtual machine management tools such as Vmware Applicable to local, remote, and cloud models
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Hosting Services Web hosting Web site only Standard support for PHP, Perl, and other dynamic page generation Dedicated Server Appropriate for applications that have not been tested and deployed in virtual environments Virtual server Requires software that supports virtualization
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Advantages Increasing opportunities to eliminate local servers and tech support Many libraries cannot support the cost of systems and network administrators which command higher salaries than professional librarians Eliminate hardware replacement, operating systems upgrades, etc.
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Application service provider Business applications hosted by software vendor Standalone application on discrete or virtualized hardware Staff and public clients accessed via the Internet Same user interfaces and functionality as if installed locally
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ASP Library Automation Entered library automation industry beginnig ~1997 Innovative (INN-Keeper) Epixtech (Horizon ASP)
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ASP vs SaaS From: THINKstrategies: CIO’s Guide to Software-as-a-Service
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Software-as-a-Service Complete software application, customized for customer use Software delivered through cloud infrastructure, data stored on cloud Eg: Salesforce.com—widely used business infrastructure
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Salesforce.com
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SirsiDynix Salesforce.com customer relationship management Sales force automation NetSuite OpenAir Professional services automation Project management BigMachines Management of quotations and software provisioning
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Google Apps
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Microsoft Office 365
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Enterprise SaaS deployments Many universities outsourcing mail Retain institutional domain names Google Apps Education Edition Gmail Microsoft Live@Edu
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Infrastructure-as-a-service Provisioning of Equipment Servers, storage Virtual server provisioning Examples: Amazon Elastic Compute Cloud (EC2) Amazon Simple Storage Service (S3) Rackspace Cloud (http://www.rackspacecloud.com/)http://www.rackspacecloud.com/ EMC 2 Atmos (http://www.atmosonline.com/)
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Amazon EC2 Machine Instances Red Hat Enterprise Linux Debian Fedora Ubuntu Linux Open Solaris Windows Server 2003/2008
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Storage-as-a-Service Provisioned, on-demand storage Bundled to, or separate from other cloud services
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Platform-as-a-Platform as a Service Virtualized computing environment for deployment of software Application engine, no specific server provisioning Examples: Google App Engine SDKs for Java, Python Heroku: ruby platform Amazon Web Service
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Private vs Public cloud Public – multi-tenant provisioning Logically isolated computing environment Theoretical security / competitive concerns Private – cloud architecture, institutionally controlled Enforces physical segregation Leverages cost and scalability Institutions may require private clouds from providers Institutions may operate their own cloud infrastructure for internal clients
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Library automation through SaaS Almost all library automation products offered through hosted options Saas or ASP?
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ILS Products offered as SaaS SirsiDynix Symphony SirsiDynix Horizon Innovative Interfaces Millennium Ex Libris Aleph EOS International EOS.Web Evergreen – Equinox Software Koha – LibLime, ByWater, many others internationally …many other examples …
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Discovery products offered through SaaS Serials Solutions Summon 360 Search, 360 Link, KnowledgeWorks Ex Libris Primo Total Care Primo Central … many other examples …
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Repositories in the cloud Dspace – institutional repository application Fedora – generalized repository platform DuraSpace – organization now over both Dspace and Fedora DuraCloud – shared, hosted repository platform Pilot since 2009, production in early 2011 http://www.duraspace.org/duracloud.php http://www.duraspace.org/duracloud.php
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Vendor hosting behind-the-scenes Libraries need to have confidence in the reliability and robustness of service Different hosting scenarios Vendor manages its own data center Vendor leases server space in third party data center Vendor relies on cloud-based infrastructure
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Caveats and concerns with SaaS Libraries must have adequate bandwidth to support access to remote applications without latency Quality of service agreements that guarantee performance and reliability factors Configurability and customizability limitations Access to API’s Ability to interoperate with 3 rd party applications Eg: Connect SaaS ILS with discovery product from another vendor
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OCLC Web-scale Management Service "the first Web-scale, cooperative library management service” New highly scaleable platform for WorldCat Cataloging Interlibrary loan Discovery (WorldCat Local) Circulation Acquisitions License Management Early deployments underway now – UTC, Pepperdine, etc In Challenge to ILS Industry, OCLC Extends WorldCat Local To Launch New Library System Marshall Breeding, Library Journal 4/23/2009 http://www.libraryjournal.com/article/CA6653619.html http://www.libraryjournal.com/article/CA6653619.html
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Library applications for IaaS or PaaS Ability for libraries to use cloud resources for locally created applications Inexpensive and quick means for development and prototyping Platform for production services
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Digital library collections in the cloud? Ex: Amazon S3 for storage of digital objects? Access – depending on cost No guarantees for data security Preservation – only as one replicate of broader preservation architecture
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Cost implications Total cost of ownership Do all cost components result in increased or decreased expense Personnel costs – need less technical administration Hardware – server hardware eliminated Software costs: subscription, license, maintenance/support Indirect costs: energy costs associated with power and cooling of servers in data center IaaS: balance elimination of hardware investments for ongoing usage fees Especially attractive for development and prototyping
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Risks and concerns Privacy of data Policies, regulations, jurisdictions Ownership of data Avoid vendor lock-in Integrity of Data Backups and disaster recovery
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Security issues Most providers implement stronger safeguards beyond the capacity of local institutions Virtual instances equally susceptible to poor security practices as local computing
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Cloud computing trends for libraries Increased migration away from local computing toward some form of remote / hosted / virtualized alternative Cloud computing especially attractive to libraries with few technology support personnel Adequate bandwidth will continue to be a limiting factor
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Increased pressure Library automation vendors promoting SaaS offerings Some companies already exclusively SaaS Software pricing increasingly favorable to SaaS
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Caveat technologies promoted by companies and organizations have a vested interest in their adoption Critically assess viability of the technology and its appropriateness for your organization
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Questions and Discussion
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