Question 1,113 of 1,446
Meet RPO and RTO Requirements with Cloud SQL Point-in-Time Recovery
A Cloud SQL instance stores financial data. They need to meet a 1-hour RPO and 30-minute RTO. What backup configuration should they use?
Quick Answer
The correct backup configuration is automatic backups plus binary logging to enable point-in-time recovery (PITR). This combination meets a 1-hour RPO because binary logs capture every transaction as it occurs, allowing you to restore to any point within the backup retention period—recovering data committed as recently as seconds ago, well within the one-hour window. For the 30-minute RTO, the most recent automatic full backup serves as a base, and applying the relevant binary logs from that point forward enables a rapid restore without needing to replay an entire day’s transactions. On the Google Professional Cloud Database Engineer exam, this scenario tests your understanding that PITR is the only way to achieve sub-hour RPOs with Cloud SQL, while a common trap is assuming that simply increasing automatic backup frequency alone can meet a 1-hour RPO—without binary logging, you can only restore to the last full backup time. Remember the mnemonic: “Logs for low RPO, base for fast RTO.”
⚠ Common exam trap
Google Cloud often tests the distinction between high availability (HA) and backup/recovery; candidates mistakenly think HA alone satisfies RPO/RTO requirements, but HA only ensures uptime, not point-in-time data recovery.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Automatic backups plus binary logging to enable point-in-time recovery (PITR).
Automatic backups combined with binary logging enable point-in-time recovery (PITR), which allows restoring the database to any point within the backup retention period. This configuration meets the 1-hour RPO by recovering transactions committed within the last hour, and the 30-minute RTO by using the most recent full backup plus binary logs to restore quickly.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Export once a day to Cloud Storage.
Why it's wrong here
Daily exports cannot meet a 1-hour RPO.
- ✓
Automatic backups plus binary logging to enable point-in-time recovery (PITR).
Why this is correct
PITR with binary logs allows recovery to any point in the last 7 days, meeting the 1-hour RPO.
- ✗
Enable high availability.
Why it's wrong here
HA provides redundancy but does not address backup and recovery point objectives.
- ✗
Automatic backups with a schedule of 1 hour.
Why it's wrong here
Automatic backups have a minimum 4-hour frequency, so 1-hour is not achievable with backups alone.
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Same concept, more angles
1 more way this is tested on PCDE
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A Database Engineer is responsible for managing a Cloud SQL for MySQL instance. The engineer needs to ensure that automated backups are retained for 14 days and that point-in-time recovery (PITR) is enabled. Which configuration should the engineer set?
easy- A.Create scheduled manual backups each day and retain them for 14 days; PITR is not needed because backups are daily.
- ✓ B.Enable automated backups, set backup retention to 14 days, and enable binary logging.
- C.Enable automated backups with a retention of 14 days; PITR is automatically enabled.
- D.Enable automated backups with 14-day retention and set up a cross-region replica for disaster recovery.
Why B: Enabling automated backups with a 14-day retention ensures backup files are kept for the required duration, and enabling binary logging (which is required for PITR) allows point-in-time recovery by replaying transaction logs against a base backup. In Cloud SQL for MySQL, PITR is not automatically enabled with automated backups; binary logging must be explicitly enabled.
Last reviewed: Jun 30, 2026
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