many things can go wrong: a disk in a server can stop working, network cards can start dropping packets, or ToR switches might cease to function. The entire data center might also be affected by power supply degradation, causing servers to operate at reduced capacity. On-site engineers must be able to identify these incidents quickly and fix them promptly.</p>
<p>Diagnosing individual server failures is rather straightforward: take a recent history of metric reports from that particular server, analyse it a