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Google Professional Cloud Database Engineer Exam - Topic 8 Question 63 Discussion

Actual exam question for Google's Professional Cloud Database Engineer exam
Question #: 63
Topic #: 8
[All Professional Cloud Database Engineer Questions]

You have a large Cloud SQL for PostgreSQL instance. The database instance is not mission-critical, and you want to minimize operational costs. What should you do to lower the cost of backups in this environment?

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Suggested Answer: D

By default, for each instance, Cloud SQL retains seven automated backups, in addition to on-demand backups. You can configure how many automated backups to retain (from 1 to 365). We charge a lower rate for backup storage than for other types of instances. https://cloud.google.com/sql/docs/mysql/backup-recovery/backups


by Malinda at Nov 19, 2025, 08:20 AM

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Frederica
9 hours ago
C) Changing regions might not help with costs, just saying.
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Kate
6 days ago
B) HDDs are way slower though, not sure if that's worth it.
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Naomi
11 days ago
A) sounds like a good way to cut costs!
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Tamar
16 days ago
This is a no-brainer. D) is the way to go. Two backups are more than enough!
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Stephanie
21 days ago
Hmm, I'm going to have to go with B). Gotta save those pennies, even if it means slower backups.
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Devorah
26 days ago
This is a tough one. I'd go with C) just to be different, you know?
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Gerald
1 month ago
A) Every other day? That's genius! Why didn't I think of that?
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Britt
1 month ago
Reducing the number of retained backups in option D seems logical, but I’m not sure if two backups is enough for recovery purposes.
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Lucina
1 month ago
I feel like option C might not really affect costs significantly, but I can't recall the specifics about regional pricing.
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Aja
2 months ago
I think option A makes sense since reducing the frequency of backups could save costs, but I'm not sure if it's the best choice.
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Moon
2 months ago
I'm pretty confident this one. The answer is clearly option C - selecting a different, cheaper region to store the backups is the most straightforward way to lower the costs here.
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Kara
2 months ago
Okay, I've got a strategy here. I think option B is the best choice - switching the backup storage from SSD to HDD will definitely reduce the costs without impacting the backup functionality too much.
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Vivan
2 months ago
D) Reducing the number of backups is smart. I mean, how often do you really need to restore from a backup, right?
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Lanie
2 months ago
B) Definitely the way to go. HDD is way cheaper than SSD, and who needs fast backups anyway?
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Olen
3 months ago
I agree with D. Why keep so many backups if it's not critical?
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Sanda
3 months ago
I remember something about storage tiers; maybe option B is a good idea since HDDs are cheaper than SSDs, but I wonder about performance.
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Dominque
3 months ago
Hmm, this seems like a tricky one. I'm thinking option D might be the way to go - reducing the number of backups retained could save some money without compromising the data too much.
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Yaeko
3 months ago
I'm not totally sure about this one. I know we need to lower the backup costs, but I'm not sure if changing the backup frequency or storage tier is the best approach.
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Cherry
2 months ago
I think changing the storage tier to HDD could save money.
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