HA & DR Cheatsheet

RTO/RPO Targets by tier:
Tier 1 (Mission critical): RTO < 1 min, RPO = 0 (zero data loss)
Tier 2 (Business critical): RTO < 15 min, RPO < 5 min
Tier 3 (Important): RTO < 4 hours, RPO < 1 hour
Tier 4 (Non-critical): RTO < 24 hours, RPO < 24 hours

DR Strategies (cost vs recovery speed):
Backup & Restore → Pilot Light → Warm Standby → Multi-Site Active-Active
(cheapest)                                        (most expensive)
(hours RTO)                                       (zero RTO)

Quick Reference — Ha Dr

Key Points for Revision

•Review the overview section for core architecture and fundamentals

•Practice commands/configurations from the cheatsheet section

•Use interview Q&A for active recall before exams or interviews

•Cross-reference with related tools in the devops academy

Practice Approach

1.Read the overview to understand what and why

2.Work through fundamentals for how

3.Attempt hands-on labs or configurations

4.Test yourself with interview questions

5.Keep cheatsheet accessible for quick reference during work

Further Learning

Connect this topic to the broader devops ecosystem.

Each tool in this academy is designed to work with others —

understanding the integration points is what separates intermediate from senior practitioners.

This section is part of the SynfraCore learning platform. Use the sidebar to navigate to Overview, Fundamentals, Advanced, and Cheatsheet sections for comprehensive coverage of this topic.

Summary

This reference section complements the main content. For best results:

•Start with the Overview to understand the big picture

•Work through Fundamentals for core concepts

•Use this section alongside the Cheatsheet for quick recall

•Practice with Interview Q&A to test your understanding

Use the navigation sidebar to move between sections of this topic.

HA & Disaster Recovery — Cheatsheets