عرض عملي: تقدير تكلفة ثلاثة أنماط للتعافي من الكوارث لعملية الدفع في Larkspur

خطوة بخطوة

1. Set targets with the sponsor: example checkout RTO one hour, RPO five minutes (assumptions, confirm with the business).
2. Option A, backup-restore: low monthly cost; recovery measured in many hours; misses the RTO.
3. Option B, warm standby in a second region: replicate data, run a small copy; meets the RTO; moderate cost.
4. Option C, active-active: meets any RTO; highest cost and consistency complexity.
5. Planned mistake: choosing active-active because "downtime is unacceptable". Fix: price it against lost-sales-per-hour and show the sponsor warm standby meets the stated targets at a fraction of the cost.
6. Present recommendation with cost ranges and the residual risk; escalate if the sponsor wants a tighter target than the budget allows.