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Zorluk: ZorEstimating GCP Costs with the Pricing Calculator

A cloud engineer is tasked with estimating monthly infrastructure costs using the Google Cloud Pricing Calculator for a mission-critical, high-availability PostgreSQL database running 24/724/7 on Compute Engine instances. The workload requires persistent data storage with daily automated backups that will be accessed regularly by automated audit scripts. Which approach in the Pricing Calculator correctly applies GCP billing mechanics and pricing options for this workload?

  1. Model the database instances as Standard Compute Engine VMs with Committed Use Discounts (CUDs) applied, and select Standard Cloud Storage for the daily backup bucket.Cevap
  2. B
    Model the database instances as Spot VMs to lower compute costs by up to 90%, and configure persistent disks for high availability.
  3. C
    Configure the backup bucket using Archive Cloud Storage class to minimize initial monthly storage costs for daily automated backups.
  4. D
    Apply a 3-year Committed Use Discount (CUD) parameter while also enabling Sustained Use Discount (SUD) stacking in the calculator settings to maximize compute savings.

Cevap

Model the database instances as Standard Compute Engine VMs with Committed Use Discounts (CUDs) applied, and select Standard Cloud Storage for the daily backup bucket.
Modeling the workload as Standard Compute Engine VMs with Committed Use Discounts accurately reflects the baseline pricing for a continuous 24/724/7 database, while Standard Cloud Storage accommodates frequent backup reads without incurring high retrieval charges.

Adım Adım Çözüm

1
Analyze the VM workload operational requirements.
The database operates 24/7 and requires high availability. Spot VMs are subject to sudden preemption and are unsuited for persistent database instances.
Mission-critical databases require predictable uptime guarantees.
2
Determine the appropriate discount mechanism for 24/7 Compute Engine VMs.
Committed Use Discounts (CUDs) offer significant savings for baseline 1-year or 3-year continuous workloads. Sustained Use Discounts (SUDs) only apply to non-committed on-demand usage and cannot be combined with CUDs.
CUDs override SUDs; the pricing calculator correctly excludes SUDs when a commitment is selected.
3
Evaluate Cloud Storage classes based on access frequency.
Because backups are accessed regularly by automated audit scripts, Standard Cloud Storage avoids early deletion penalties and retrieval charges associated with Archive storage.
Choosing Archive storage for frequently read data results in high unexpected retrieval fees.

Anahtar Kavram

Accurate cost estimation for continuous database workloads requires selecting Committed Use Discounts for compute instances and evaluating access pattern retrieval costs when choosing storage classes in the GCP Pricing Calculator.
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Estimating GCP Costs with the Pricing Calculator

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