Merge branch 'mek/doc-add-more-availaiblity-facet' into 'master'

Add more facets of availability to the documentation

See merge request gitlab-org/gitlab!29339

doc/administration/availability/index.md

@@ -26,6 +26,14 @@ watch [this 1 hour Q&A](https://www.youtube.com/watch?v=uCU8jdYzpac)
 with [John Northrup](https://gitlab.com/northrup), and live questions coming
 in from some of our customers.
 
+GitLab offers a number of options to manage availability and resiliency. Below are the options to consider with trade-offs.
+
+| Event | GitLab Feature | Recovery Point Objective (RPO) | Recovery Time Objective (RTO) | Cost |
+| ----- | -------------- | --- | --- | ---- |
+| Availability Zone failure | "GitLab HA" | No loss | No loss | 2x Git storage, multiple nodes balanced across AZ's |
+| Region failure | "GitLab Disaster Recovery" | 5-10 minutes | 30 minutes | 2x primary cost |
+| All failures | Backup/Restore | Last backup | Hours to Days | Cost of storing the backups |
+
 ## High availability
 
 ### Omnibus installation with automatic database failover