Objective 2.1 –Map Business Requirements to the Logical
Design
Knowledge
·
List the fundamental components of the vSphere4
environment.
·
List the fundamentals of the VMware
virtualization architecture.
·
List the phase of logical design.
·
List the detailed steps that go into the makeup
of a logical design.
Skills
and Abilities
·
Define a logical design.
·
Apply the detailed steps that go into the makeup
of a logical design to a particular customer environment.
·
Distinguish between a logical and physical
design.
·
Given a situation, translate given business
requirements and the current state of a customer environment into a logical
design.
Tools
The logical design
includes the relationships between all major infrastructure components, while
considering:
• The
conceptual design
• Constraints
and risks
The logical design is
useful for understanding and evaluating the design of the infrastructure.
• Does
it meet the goals and requirements, while staying within the constraints?
The logical design does
not include physical details:
• For
example, vendor models, host names, IP addresses, and port connections
The logical design is based on the
information documented in the conceptual design and considers all constraints
and risks. Where there are risks, they should be communicated to the
organization along with a recommended action, so that a decision can be made
and the design can move forward.
Use the logical design to create the physical design.
A physical design
includes specific vendor and implementation details:
• Vendor
models, host names, IP addresses, port connections, LUN sizes, number of CPUs,
and other specific physical details
In the end, a good
design:
• Involves
the organization’s key stakeholders and SMEs
• Balances
business goals and requirements with technical considerations and best
practices
• Has
documented rationales and considerations
• Includes
enough detail to be unambiguous
• Is
not unnecessarily complex
• Is
repeatable
At the beginning of any
design project you need to develop a high level vision for the project. This
high-level vision includes the project
scope, goals,
requirements, assumptions, and constraints.
The conceptual design
focuses on achieving the organization’s business goals and requirements.
The logical design
includes the relationships between all major infrastructure components and is
useful for understanding and evaluating the design of the infrastructure.
A physical design
includes specific vendor and implementation details.
Design criteria should
include usability, manageability, security, and cost.
Educate key stakeholders
and SMEs about vSphere and virtualization so that they can provide valuable
input during the design project.
Designing is a balancing
act between technical best practices and the organization’s goals,
requirements, and constraints.
Objective 2.2 – Map Service Dependencies
Knowledge
·
Identify basic service dependencies for
infrastructure and application services.
Skills
and Abilities
·
Analyze service dependencies to determine
requirements for the logical design of a multi site environment.
·
Identify the upstream/downstream service
dependencies.
·
Having navigated logical components and their
interdependencies, make decisions based upon all service relationships.
Tools
Depending on the project, the optional
installation and configuration document might include only high-level steps for
implementing the design. On the other hand, the document might include step-by-
step procedures for implementing the design. The level of detail typically
depends on the cost of the project and whether the design is product-oriented
or solution-oriented. A solution-oriented project typically includes more
details specific to an organization’s needs.
In either case, these documents can
refer to online VMware documentation for detailed step-by-step instructions as
necessary. Assume that the reader is familiar with basic vSphere operation.
At a minimum, these documents should
include the products listed above.
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