EA and IT Infrastructure - 1© Minder Chen, 1995-2011 Stages in IT Infrastructure Evolution...
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Transcript of EA and IT Infrastructure - 1© Minder Chen, 1995-2011 Stages in IT Infrastructure Evolution...
EA and IT Infrastructure - 1 © Minder Chen, 1995-2011
Stages in IT Infrastructure Evolution
Mainframe/Mini Computers
Personal Computer
Client/Sever Computing
Web-based enterprise applications
Cloud Computing/mobile device
EA and IT Infrastructure - 2 © Minder Chen, 1995-2011
The network is the computer
• "Sun has always been very early, and often way too early with a lot of our ideas.
• For example, in the '80s we were preaching that the network is the computer.
• Shame on us for not summing it up in one word – cloud.
• To sound a little Al Gore-ish we invented open source, but we went a little too aggressive over the last four years.“
– Scott McNealy
EA and IT Infrastructure - 3 © Minder Chen, 1995-2011
On the Cloud
• The cloud symbol is often used as a notation as a network in the a system architecture diagram.
EA and IT Infrastructure - 4 © Minder Chen, 1995-2011
# of Data Centers in America?
7,0007,000Economist Survey on IT, 2008Economist Survey on IT, 2008
Vertualization
EA and IT Infrastructure - 5 © Minder Chen, 1995-2011
% of Utilized Server Capacity
on Average?
6%6%IDC, 2008IDC, 2008
Service Utilization
EA and IT Infrastructure - 6 © Minder Chen, 1995-2011
Over Provisioning = Waste
Demand
Capacity
Time6
EA and IT Infrastructure - 8 © Minder Chen, 1995-2011
Without Virtualization
• All require same power
• All emit same heat
• All require physical space
• Setup, (re-)configuration
• Maintenance, support…
EA and IT Infrastructure - 9 © Minder Chen, 1995-2011
With Virtualization
Flexibility
Rapid provisioning
Disaster Recovery
High Availability
Automation
Systems Management integration
Adaptive Datacenter
EA and IT Infrastructure - 10 © Minder Chen, 1995-2011
Definition of Cloud Computing
• The NIST definition of cloud computing:
Cloud computing is a model for enabling convenient, on-demand network access to a shared pool of configurable computing resources (e.g., networks, servers, storage, applications, and services) that can be rapidly provisioned and released with minimal management effort or service provider interaction.
• The ability for end users to utilize parts of bulk resources and that these resources.
EA and IT Infrastructure - 11 © Minder Chen, 1995-2011
Characteristics of Cloud Services
NIST identifies several characteristics for a service to be considered “Cloud”:
• On-demand self-service: The ability for an end user to sign up and receive services without the long delays that have characterized traditional IT.
• Broad network access: Ability to access the service via standard platforms (desktop, laptop, mobile etc).
• Resource pooling: Resources are pooled across multiple customers.
• Rapid elasticity: Capability can scale to cope with demand peaks.
• Measured Service: Billing is metered and delivered as a utility service can be acquired quickly and easily.
http://resources.idgenterprise.com/original/AST-0032300_Understanding_the_Cloud_Computing_Stack.pdf
EA and IT Infrastructure - 12 © Minder Chen, 1995-2011
Deployment Models: Cloud Computing
• Private cloud, Community cloud, Public cloud, Hybrid cloud
Source: http://csrc.nist.gov/publications/nistpubs/800-145/SP800-145.pdf
EA and IT Infrastructure - 14 © Minder Chen, 1995-2011
Platform Continuum
• Bring your own machines, connectivity, software, etc.
• Complete control• Complete
responsibility• Static capabilities• Upfront capital costs
for the infrastructure
• Renting machines, connectivity, software
• Less control• Fewer
responsibilities• Lower capital costs • More flexible• Pay for fixed
capacity, even if idle
• Shared, multi-tenant infrastructure
• Virtualized & dynamic• Scalable & available• Abstracted from the
infrastructure• Higher-level services• Pay as you go
On-PremisesServers
Hosted
Servers
Cloud Platform
EA and IT Infrastructure - 15 © Minder Chen, 1995-2011
http://aws.amazon.com/
http://www.salesforce.com/
PaaS
Software as a service (SaaS)
Google AppEngine
Amazon's EC2 (Elastic Compute Cloud)
Fulfilled by Amazon
EA and IT Infrastructure - 16 © Minder Chen, 1995-2011
Fulfilled By Amazon
Source:
•http://services.amazon.com/fulfillment-by-amazon/how-it-works.htm
•http://amazongenius.com/fulfillmentbyamazon/
EA and IT Infrastructure - 21 © Minder Chen, 1995-2011
Pricing
http://www.apple.com/icloud/features/
EA and IT Infrastructure - 23 © Minder Chen, 1995-2011
What Happened?
• What Happened?
• Amazon Web Services cloud problems affect Foursquare, HootSuite, Reddit
• http://latimesblogs.latimes.com/technology/2011/04/amazon-web-services-server-problems-affect-foursquare-hootsuite-reddit.html
EA and IT Infrastructure - 24 © Minder Chen, 1995-2011
Who Are on the Cloud?
http://blog.laptopmag.com/wpress/wp-content/uploads/2011/09/sept_340_cloud_wars_sf.jpg