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Difficulty: MediumPlanning Cloud Storage Buckets and Storage Classes

An IoT fleet management platform uploads vehicle diagnostic logs to a Google Cloud Storage bucket. The engineering team inspects these log files frequently during the first 30 days to resolve operational anomalies. Between day 31 and day 90, logs are queried occasionally (less than once per month) for performance reporting. Beyond 90 days, logs are rarely accessed (less than once a quarter) but must be retained for 3 years for compliance, requiring immediate millisecond access when queried. Which TWO Object Lifecycle Management rule actions should you configure to minimize total cost of ownership while satisfying access requirements?

  1. Set a lifecycle rule to transition objects from Standard to Nearline storage class after 30 days.Answer
  2. B
    Set a lifecycle rule to transition objects from Standard to Coldline storage class after 1 day.
  3. Set a lifecycle rule to transition objects from Nearline to Coldline storage class after 90 days.Answer
  4. D
    Set a lifecycle rule to transition objects from Standard directly to Archive storage class after 30 days.

Answer

The optimal configuration transitions objects from Standard to Nearline storage after 30 days, and subsequently from Nearline to Coldline storage after 90 days.
Transitioning to Nearline after 30 days aligns with the 30-day minimum storage duration and monthly access pattern. Moving data to Coldline after 90 days aligns with the quarterly access rate and 90-day minimum storage requirement, ensuring low at-rest storage costs without incurring unnecessary retrieval penalties.

Step-by-Step Solution

1
Analyze the active usage window (Days 1–30)
Keep data in Standard storage during the first 30 days because frequent access will not incur data retrieval charges.
Coldline and Nearline storage classes charge data retrieval fees for frequent access.
2
Analyze the medium-term access window (Days 31–90)
Transition to Nearline storage class after 30 days.
Nearline is cost-optimized for data accessed at most once a month and has a 30-day minimum storage duration.
3
Analyze the long-term compliance retention window (Day 91+)
Transition to Coldline storage class after 90 days.
Coldline is optimized for data accessed at most once per quarter (90 days) and provides millisecond access latency required for unexpected compliance audits.

Key Concept

Cloud Storage Class Lifecycle Tiering & Cost Optimization
Estimated Time:1m 30s
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Topics

Planning Cloud Storage Buckets and Storage Classes

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