Migrating to Cloud - A Step by Step

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Cloud in Steps

Migration Strategy

[email protected]

Overview

Cloud Criteria

Cloud RoI

Cloud Migration

Cloud Maintenance

Cloud movement

Cloud

Service centric view

Current and Future IT

architecture

Treat IT as a Service


IT – Service Centric View

IT as a service

• Delink from infrastructure

• No more software licensing?

• No more dedicated hardware?

• Rent then the software/hardware and/or service as a whole

• Possible only with IT centric view


Commoditization

• Can I change my server from 2 CPUs to 4 CPUs next week?

― What happens to my current hardware

• Can I change my email service from one provider to the other?

• Can I change my Order Management from one vendor to other?

― Yes, you can always change?

― What happens to my existing data: Migration trouble?

• Resources when you need

Service Centric View – RoI

RoI possible only when viewed in service centric of

• Can I reduce the number of Microsoft Office licenses using cloud model?


Service evaluation

• Service SLA

• Service infrastructure costs – Any SLAs?

― How much are we paying for services?

― How much are we paying for servers?

― How much are we paying for software?

― How much are we paying for network

Evaluate RoI on these investments

Service SLA


• What happens to my applications?

― Applications access, interface will remain same. No change for the user.

• How soon can my enhancements be processed?

― No change. Same as before

• How much time does it take to fix a production problem?


• How much control do I have on the data?

― Complete control

• What happens to my backup and archiving services?

― Backup and archiving happens in cloud

• How much time does it take to restore backup on the cloud?


• How much control do I have on my server?

― Complete control

― Can I reboot, change system configuration? Yes, absolutely.

• What will be the performance of my application?

― No change

― What is the guarantee? (Benchmarks not yet present)

• What will be the uptime?

― 99.95% for Amazon

1 2 3 4

Cloud in steps

Cloud Criteria

Cloud RoI

Cloud Migration

Cloud Maintenance


Steps in moving to cloud

Cloud Criteria – Likely candidates


• Do you have app candidates that are not frequently used?

• Do you have varying degree of demands

― Need more horsepower in Holiday season

• Do you expect your computing requirements (CPUs, storage, network services) to grow over a period of time?

― Pay for what you use now. No upfront costs?

― Scale when required

• Support contracts for hardware, servers and network?

― Do you have huge costs?

• Do you have the back up services running only in the night?

― Schedule the backup service and pay for that time only.

• Do you want to share applications across the globe?

1

Cloud Criteria – Likely candidates …contd


• Platform compatibility

― Do you want to test your apps on multiple platforms?

• Varying load

• Better services at cloud

― Best-of-breed service available at a cheaper price?

• My App can run anywhere

― No dependency on infrastructure

• New deployments of you customers

• Use Microsoft Office in US and India at different times. Pay for one license only? – Just an example

Cloud RoI


• SLA evaluation

― Quantify the SLAs in cloud and non-cloud environments

• Apply Cloud criteria and identify services to migrate to cloud

― Apply RoI for all these services

• Understand the risks

― When is the network down? Whom should I contact?

― What is the process for Fixing IT production issue?

• Decide to move

2

Cloud Migration


• Services identified to migrate

― Quantify the SLAs in cloud and non-cloud environments

• Plan the migration

― Migrate easy ones first: Evaluate RoI and monitor SLA guarantees

― Gain experience

― Migrate the complex ones

• Migrate the application: Pre production stage

― Deploy and test the application

― Scaling up and down strategy: Test the scripts

― Monitor the performance

― Test the applications: Functional tests, Stress tests, Load tests, Negative tests (insufficient disk, no network etc)

• Move to production

― Shop around for optimum resources

― Test and Move

― Watch for discounts (Holiday season? And migrate?)

3

Cloud Maintenance


• Monitor Services

― Monitor availability and use of Servers, Storage and Network

• Scaling up and down

― Scale resource when you need

• Crossed your budget?

― Track and monitor billing

• Monitor performance of apps

― Apps were slow last week? and

― Why?

• Bandwidth SLA?

― Network latency?

4

Cloud Risks


• How do you measure SLA violations?

• Can someone change the hardware underneath, while I’m sleeping?

• What about Compliance?

― Government compliance in terms of Location of resources and type of software being used

• Do I get locked in to a vendor?

• Can the vendor take me for a ride?

― I don’t control anything?

• Who will settle my dispute?

• Last night, the application was down?

― Do not know the reason. Any trouble from your side?

― What happened? Network problem? Disk problem? Machine problem?

Thank You

http://www.imaginea.com [email protected]


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Migrating to Cloud - A Step by Step