Disaster Recovery

Question 1

What’s synchronous replication?

Answer 1

Automatic, synchronised replication to multiple locations.

Question 2

What’s asynchronous replication?

Answer 2

Non autonomous replication. Happens as and when the bandwidth and performance allow.

Question 3

RTO means…

Answer 3

Recovery Time Objective.

The time it takes to fully recover from a disaster.

Question 4

RPO means

Answer 4

Recovery point objective.

This is the acceptable data loss in time.

Question 5

Explain Disaster Recovery Technique: backup and explore

Answer 5

Old fashioned style manual backups.

Question 6

Explain Disaster Recovery Technique: pilot Light

Answer 6

Replicated / mirrored resources running in the background. But absolutely minimal version. Will need to be scaled and some donkey work will need to be done to make it live.

Question 7

Explain Disaster Recovery Technique: Warm Standby

Answer 7

Replicated / mirrored versions of your production environment good to gonna small amount of work may be required to launch from a warm standby.

Question 8

Explain Disaster Recovery Technique: Multisite

Answer 8

A complete, fully functioning version of prod. Ready to go at a moments notice.

Question 9

Define Failback.

Answer 9

The process of copying data from a backup site, back to production.