Your organization uses Cloud Spanner for a global financial application. You are designing a backup and disaster recovery strategy. Which TWO considerations are important for meeting RPO of 1 hour and RTO of 2 hours?
Trap 1: Schedule incremental backups every hour using Cloud Scheduler.
Cloud Spanner does not support incremental backups; only full backups are available, and scheduling backups with Cloud Scheduler is not the recommended approach for meeting a 1-hour RPO.
Trap 2: Store backups in a multi-regional Cloud Storage bucket.
Spanner backups are stored within the instance's location; you can export to Cloud Storage but that is separate.
Trap 3: Set up read replicas in a different region for failover.
Spanner does not use read replicas; multi-region instances handle failover.
- A
Enable point-in-time recovery (PITR) with a 7-day retention.
PITR allows recovery to any point within the retention period, meeting RPO.
- B
Schedule incremental backups every hour using Cloud Scheduler.
Why wrong: Cloud Spanner does not support incremental backups; only full backups are available, and scheduling backups with Cloud Scheduler is not the recommended approach for meeting a 1-hour RPO.
- C
Configure a multi-region Spanner instance to survive a regional outage.
Multi-region instances provide automatic failover for DR.
- D
Store backups in a multi-regional Cloud Storage bucket.
Why wrong: Spanner backups are stored within the instance's location; you can export to Cloud Storage but that is separate.
- E
Set up read replicas in a different region for failover.
Why wrong: Spanner does not use read replicas; multi-region instances handle failover.