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Figure 1: The evolution of I/O—from physical cabling constraints to logical proximity. The Ticket-to-LUN Latency Loop It always kicks off the same way. The SQL team gripes about write latency. The dashboard? Still green. You check the switch ports—zero errors. You poke around on the array—cache hits look fine. Yet the app crawls. Classic 3-Tier…
I once debugged a “random” application timeout for a Chicago-based trading platform. The developers blamed the code; the sysadmins blamed the database. I blamed the weather. It turned out their critical API traffic was traversing the public internet via a standard IPsec VPN. A fiber cut in Ohio had forced BGP to re-route their traffic…
I have been in the War Room. You know the one. The application team is screaming that the database is freezing every few minutes. The storage team checks Prism—everything looks fine. The network team checks SolarWinds—links are green. Yet, the application is timing out. The culprit isn’t a hard down. It’s a micro-burst. A momentary…
