After a blackhole, a postmortem shows missing baseline interface error counters. What monitoring practice was lacking?
Select an answer to reveal the explanation.
Short Explanation
Without a baseline, error counters are just lonely numbers—like a fever reading with no idea what 'normal' temperature was yesterday. Good DC monitoring keeps a known-good snapshot so a blackhole investigation has contrast. Wiping history or trusting 'it seemed fine' is how postmortems shrug.
Full Explanation
Effective data-center monitoring includes baselining interface error counters and related metrics so operators can detect meaningful deviations during incidents. Absent baselines, post-event analysis lacks quantitative contrast between healthy and failed states. Discarding history, relying on anecdote, or refusing to collect interface errors undermines that practice.