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| ©2011, Cognizant 2
AGENDA
Data Centre Migration and Application Migration
)
Planning and Execution.
Migration Phases
Key Roles
Key Risks and Mitigation Strategy
Appendix- Detailed information about the
migration process
| ©2011, Cognizant 3
Data Centre and Application Migration - Overview
Data Centre Migration: Data Centre Migration (DCM) represents
the physical or logical relocation of IT
services from one hosting location to
another.
Deliver the Data Centre Migration
Services in discrete phases to ensure
business continuity and consistent
design
Plan and execute a Data Centre
Migration with the appropriate level of
rigour and control, utilising proven
methods and expertise to ensure the
business can continue as usual
Complete the change with minimum
impact on business activities
Maintain similar performance levels
across data centres and minimize impact
to the underlying architecture.
Application Migration Planning and executing the
migration of individual
application components and
environments.
Migration approaches were
chosen based on a detailed
assessment primarily ,new
build, Physical to Virtual and
Virtual to Virtual.
Ensure the technology stack
was retained without any
changes to underlying
hardware and software.
Completing the migration with
with minimum impact on
business activities.
| ©2012, Cognizant
Application
Migration
Application Migration – Mind Map
Migration Approach Technical Assessment to
chose among the various
migration methods:
New Build
Lift n Shift
Virtual to Virtual
Physical to Virtual
Restore to Virtual
Identify and Validate
Migration Tools
Identify migration
tools
Conduct proof of
concept exercise
Identify and Record
Application
components
Servers
Environments
Platform
Dependencies (
NAS, Load
Balancer etc.)
Performance and
Latency Test
Performance
benchmarks need
to be set.
Latency tests for
critical
applications.
Identify Pre
Migration and Post
Migration Activities Identify pre
migration to prepare
for the migration
Identify post
migration validation
steps and support
activities.
Communication
Strategy
Understand the key
milestones in the
migration process
Building
communication
strategy and
templates for
communication.
Identify Legacy
Applications and
Modernize
Legacy Application
discovery.
Prepare a strategy
to modernize before
migrating.
DR and Risk Strategy
for Production. Plan for contingency
for production
servers, particularly
for Lift n Shift.
Identify and mitigate
technical risks due to
migration
| ©2012, Cognizant
Migration Phases
Planning
Analysis &
Design
Analysis of all
migration
components
Compare existing
infrastructure with
new infrastructure to
understand the risks.
Create design
documents for any
key architectural and
configuration
changes due to
migration.
Proof of Concepts
for identifying the
tools and
methodologies for
migration.
Migration
Migrate the data
from the source data
centre to target data
centre and maintain
data integrity.
Migrate all
environments in a
phased manner starting
from Dev to Production
in that order.
Cut down
dependency on the
application in the old
data centre without
affecting the business
users.
Ensure performance
benchmarks are not
impacted due to
migration.
Post Migration
Qualify and Test
the application for
each server
migration.
Perform any
configuration
changes required for
application.
Follow the GxP
validation process for
validated
environments.
Maintain and
archive logs created
as part of validation
for future audits.
Hypercare
Support
Establish the
process to support
any issues post
migration.
Detailed planning
and coordination to
ensure adequate
validation of the
Production
environment within a
short span of time.
Scoping,
scheduling and
resourcing for the
entire Migration
Programme.
Due to the size,
complexity , risk and
business involved
extensive planning
was required covering
minute details
without which the
migration would not
be a success.
Data collection,
Risk Analysis and
Mitigation process
| ©2012, Cognizant
Ideal Team Structure
Key Roles
Project Manager: Plan and
schedule the migration , assess the
risks and manage the resourcing
and cost of the project.
Migration Architect: Assess the
migration methods and formulate
the ideal migration approach for the
application across environments.
Validation Analyst: Formulating
strategies for validation and testing
pre and post migration to meet the
GxP guidelines.
Testers : Prepare and execute the
test cases for pre and post
migration testing.
| ©2012, Cognizant
Key Risks and Mitigation strategy
Different strategies available
for virtualizing physical
boxes. Each comes with its
own risk. Need to perform
proof of concept and choose
in the initial phase.
Outdated Technologies
used for storage might
not be easily portable to
the new data centre.
Need to assesse during
the planning stages and
plan for remediation.
Server running on legacy and
out of support operating
systems like Sun Solaris etc.
need to be phased out to the
extent possible and modernized
before migration.
Performance can be impacted due to variety of
reasons , database parameters, network stability
etc., extensive analysis and pre migration
performance testing should be done to ensure
performance is not impacted. Lift n shift of servers should
be minimized and used a the
last option where its not
possible to use any alternate
migration methods.
For critical systems a
contingency plan should be
put in place if Lift n Shift is
involved.
Configuration activities
that do not need
application downtime
need to be planned and
executed ahead of
migration to minimize
application downtime.