By Eiad Al-Aqqad, VMWare Professional Services Consultant
This decade has offered more Data Center transformation options than most IT Professionals were able to keep up with. Virtualization has dramatically changed the way things were traditional done in the datacenter. Having the largest Data Center is not something to brag about anymore, as it might be a symbol of inefficiencies. Next, the Cloud Computing storm hit the datacenter and while IT Professionals started to digest it, the Software Defined Data Center concept has evolved. While each of these Data Center Transformations has offered great advantages to adopters, it had its own challenges and quite frankly, planning was not optional for a successful implementation.
Planning is critical for Data Center transformation and does not stop at the infrastructure planning, but extends to understanding your applications.
Most organizations are good at conducting the infrastructure portion of planning, but have difficulties in planning their applications for transformation. I’ve witness many transformation efforts where the customer team has a hard time answering these simple questions:
- What are your Applications Priorities?
- What are your Applications RPO/RTO and how are you planning to achieve them?
- What are the security requirements of each of your APPs ?
- What does your Application Dependency look like?
It is critical to know your applications well enough before starting any transformation effort. The four questions above are a good start. While the first three questions can normally be answered by collecting bits and pieces from contacting the right SMEs & business units, Application Dependency is more challenging and is what I want to focus on in this article. For more thoughts on workload classifications, please check out my colleague David’s post: Business as Usual with Tier 1 Business Critical Applications? – Not!
Application Dependency has proved to be more challenging due to many reasons including:
- Applications Dependencies aren’t static and can change on daily basis.
- Most organizations have inherited legacy applications with very little documentation.
- Current Change Management systems while helping to document changes are still lagging when it comes to documenting Applications Dependencies.
- Application Dependencies are always filled with unexpected surprises that no one wants to admit, like having a critical application dependent on a DB running on a PC hidden under a developer’s desk.
While Application Dependency Planning without the right tools might be challenging, the point is, before any data center transformation, thorough planning and investigation is required for a successful end game. Tools definitely help with your efforts but even more importantly, making sure you ask yourself the questions above is really the first step before anything.
At last the good news is the availability of tools and services that help automate the process of creating an accurate application dependency mapping of your environment. ADM & the Virtualization Assessment service (includes the use of Capacity Planning & Application Dependency Planner (ADP)) offered by VMware can be quite handy in creating an Application Dependency Mapping for applications within your environment. For more information about ADP, please visit: My VMware Application Dependency Planner Post
|Eiad AlAqqad is a Senior Consultant within the SDDC Professional Services practice. He has been an active consultant using VMware technologies since 2006. He is VMware Certified Design Expert (VCDX#89), as well an an expert in VMware vCloud, vSphere, & SRM.|