Intelligent Data Centres Issue 07 | Page 41

EXPERT OPINION This single source of truth has already been realised in the most advanced data centre automation solutions and it marks a very significant step towards the self- operating network or data centre. Root cause identification Another vital step is ‘root cause identification’. Once you have a single source of truth encapsulating both what the network should be doing and what it is actually doing in real time, then further intelligence can study the incoming telemetry, note any irregularities, outages or performance degradation and not only report them but also trace them back to the underlying root cause. Whether it is cars, computers or domestic appliances, there is nothing more maddening than an intermittent www.intelligentdatacentres.com fault. Something is wrong but it all works perfectly when taken to be serviced. Whereas the service operator studies the performance during inspection, a proper intent-based system keeps a full ongoing record of when and how things went wrong, together with the full knowledge of the infrastructure and component parts. The combination of a single source of truth plus AI can trace back from erratic symptoms to pinpoint the root cause. The majority of data centres are adopting leaf-spine or ‘Clos’ network topology to provide better application performance. The traditional three-tier hierarchy generated a lot of traffic up and down the system, while the ‘flatter’ leaf-spine topology places hosts at equal distances, and applications behave more predictably. The result is a higher bandwidth, lower latency, while relatively easier to manage network. THE COMBINATION OF A SINGLE SOURCE OF TRUTH PLUS AI CAN TRACE BACK FROM ERRATIC SYMPTOMS TO PINPOINT THE ROOT CAUSE. Issue 07 41