There are only two kinds of application engineers: those who say
“Data is the problem” and those who say “Data are the problem.”
The infrastructure team was provided systems discovery information from a variety of sources including internal IT, contractors and key IT support vendors. The team was delighted to see “current-state” systems information. However, the team became concerned about the accuracy of the information because key application end client information was missing. The consolidation team decided to perform first hand verification of all “current-state” data. The program manager consulted with the sr management team and hired contract systems engineers with extensive application and desktop experience to review “current-state” discovery information and verify the information. In many cases, the contract network engineer had to reverse engineer networking equipment and actual protocols to obtain an accurate “current state” data. In addition, acquiring company subject matter experts were engaged to verify and document as-built server and storage system documents. For example, reverse engineering revealed the current state network documentation did not reflect actual configurations and existing routes. In another case, another key subject matter expert identified networking equipment was owned and maintained by telecom provider Sprint instead of by the company. Additional verification revealed remote access equipment had been partially configured and was unusable. The original project had been abandoned by the IT staff short of being fully configured for operations. Application verification and reverse engineering identified software code that had been written with network third party vendor addressing and communications hard coded into the software bypassing the data file inter-exchange through the company data interexchange server.
The verified “current state” was significantly different than the “current state ” provided by vendors and staff.
There is no hard-and-fast reliable information source. That would be too easy.