Objective 1.3 – Determine Risks, Constraints, and Assumptions

Requirements, Constraints, Assumptions & Risks are very common bullet points in every project or design document, let us study more in detail about these concepts:

Requirements:

In simple words, these are the objectives defined by the requestor, such as:

  • System Uptime SLA’s
  • Amount of Physical servers to be Virtualized
  • Able to save costs through consolidation and so on
For ex: “Due to contractual obligations, we need a highly available solution, 99.9% uptime at a minimum” this can be categorized under requirements section

Constraints:

Something which will limit your design decision, it can be a technical limitation, the actual cost of the project, the choice of Vendors etc…

For ex. “We purchased a SAN 2 years ago for a file server consolidation project which we need to use for the VMware project”, this can be categorized under constraints section

Assumptions:

  • Existing Infrastructure which can be used for Virtualization project
  • Firewall rules are in place
  • Trained VMware resources to deploy the solution and so on
For ex. “We plan on our business growing by 20% annually. This growth will apply linearly to the consumption of available capacity in the datacenter” this can be categorized under Assumptions

Risks:

  • The major risk listed in the project is whether the project will be delivered on time
  • Availability of Manpower to complete the project on time
  • Not enough network bandwidth to handle the initial load etc

For ex. “Chances are good that we’ll get the capital budget approval to make network core improvements allowing is to sustain substantial increases in iSCSI traffic over the next 18 months” this can be categorized under Risks

I have extracted most of the information from Jason Boche’s BrownBag session, it’s a definite watch!

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