You are planning an urgent security patch for the company's public e-commerce web server. Monitoring shows transaction volume averages 8,000 per hour between 08:00 and 22:00 Eastern time Monday-Saturday, but falls below 200 per hour from 00:00 to 04:00 Eastern Sunday. The SLA permits up to 30 minutes of planned downtime per month. When should you schedule the maintenance window to minimize customer impact and stay within the SLA?
09:00 Eastern on Monday so operations staff are available
18:00 Eastern on Friday to allow rollback before the weekend
01:30 Eastern on Sunday when traffic is lowest
14:00 Eastern on Saturday because weekend visitors expect slower performance
Scheduling the window at 01:30 Eastern on Sunday leverages the period of lowest traffic (under 200 transactions per hour), keeping user disruption and revenue risk to a minimum while staying within the 30-minute SLA allowance. The Monday morning option occurs during a business peak, Friday evening is just before the busy weekend shopping period, and Saturday afternoon is still within high-demand hours. All three alternatives would affect far more customers and increase the likelihood of SLA violations.
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