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Zorluk: Çok zorPlanning Cloud Storage Buckets and Storage Classes

A healthcare enterprise is designing a Google Cloud Storage strategy for two distinct data workloads with strict SLA and compliance requirements:

1. Active Diagnostic Images: Files are uploaded daily and accessed constantly by clinicians during the first 30 days. Afterwards, access drops sharply to once every 3 to 6 months for historical audits over a 3-year total retention window.
2. System Compliance Logs: Files are generated continuously, accessed fewer than once per year (only during unpredictable regulatory audits), and required by law to be preserved for exactly 365 days before permanent deletion.

To minimize total cost of ownership—taking into account storage rates, data retrieval fees, and minimum storage duration penalties—which TWO storage configurations should the engineering team implement? (Select TWO)

  1. Ingest active diagnostic images into Standard storage, and use Object Lifecycle Management to transition them to Coldline storage after 30 days.Cevap
  2. Ingest system compliance logs directly into Archive storage, and use Object Lifecycle Management to delete objects after 365 days.Cevap
  3. C
    Ingest active diagnostic images directly into Archive storage upon creation to minimize initial per-gigabyte storage costs.
  4. D
    Ingest system compliance logs into Nearline storage, and use Object Lifecycle Management to delete objects after 30 days to reduce storage commitment.

Cevap

The optimal strategy is to store active diagnostic images in Standard storage for 30 days before transitioning to Coldline storage via Object Lifecycle Management, and store compliance logs directly in Archive storage with a lifecycle rule to delete objects after 365 days.
The correct strategy combines Standard storage for active reads during the initial 30 days, transitioning to Coldline storage for quarterly access patterns, while utilizing Archive storage for multi-month compliance logs to achieve the lowest at-rest storage rate without incurring early deletion penalties.

Adım Adım Çözüm

1
Analyze access patterns and retrieval cost penalties for the diagnostic images workload.
Frequent access during the first 30 days requires Standard storage to avoid high data retrieval fees. Subsequent access once every 3 to 6 months matches Coldline storage (designed for data accessed at most once per 90 days with a 90-day minimum duration requirement).
Choosing Archive or Coldline upfront for frequently read data creates massive operational retrieval costs.
2
Analyze access patterns and minimum duration requirements for the compliance logs workload.
Infrequent access (< 1/year) and a mandatory 365-day retention window align perfectly with Archive storage, which provides the lowest at-rest cost per GB and requires a 365-day minimum storage commitment.
Deleting Archive objects before 365 days incurs early deletion charges equal to the remaining duration up to 365 days; keeping them for 365 days avoids early deletion fees completely while fulfilling compliance.
3
Synthesize the optimal lifecycle configuration.
Standard -> Coldline at 30 days for images, and direct Archive deployment with deletion at 365 days for logs.
This combination minimizes both monthly storage costs and access/retrieval penalty fees.

Anahtar Kavram

Cloud Storage Class Selection & Lifecycle Planning
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Planning Cloud Storage Buckets and Storage Classes

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