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Zorluk: ZorEstimating GCP Costs with the Pricing Calculator

A cloud finance specialist is configuring an estimate in the Google Cloud Pricing Calculator for a batch data transformation job running on standard N2 Compute Engine virtual machines. The workload operates predictably for 12 hours every day throughout a 30-day month (360 total hours). When reviewing the baseline cost breakdown, how does the Google Cloud Pricing Calculator apply Sustained Use Discounts (SUDs) to this workload configuration?

  1. Sustained Use Discounts are applied incrementally because the instances run for more than 25% of the billing month (182.5 hours), though at a lower effective discount percentage than if they ran continuously 24/7.Cevap
  2. B
    Sustained Use Discounts are not applied unless an explicit 1-year or 3-year Committed Use Discount (CUD) agreement is selected in the calculator settings.
  3. C
    Sustained Use Discounts apply a flat 30% reduction immediately upon provisioning the virtual machines, regardless of the total hours operated within the billing cycle.
  4. D
    Sustained Use Discounts require converting the Compute Engine VMs to Spot instances in the calculator to unlock running-hour discounts.

Cevap

Sustained Use Discounts are applied incrementally because the instances run for more than 25% of the billing month (182.5 hours), though at a lower effective discount percentage than if they ran continuously 24/7.
In Google Cloud Compute Engine pricing, Sustained Use Discounts (SUDs) automatically apply to supported machine families (such as N1 and N2) when an instance runs for more than 25% of a billing month (182.5 hours out of 730 average hours). Running a VM for 12 hours daily (360 hours/month) exceeds the 25% threshold, so the Pricing Calculator factors in a tiered incremental discount. However, because the instance is not running continuously all month, the blended discount percentage is smaller than the maximum discount applied to 24/7 instances.

Adım Adım Çözüm

1
Determine total monthly operational hours
12 hours/day * 30 days = 360 hours per month.
SUD calculations in GCP pricing depend on the percentage of the standard 730-hour billing month used.
2
Evaluate Sustained Use Discount threshold eligibility
360 hours represents approximately 49.3% of the month, exceeding the 25% (182.5 hours) minimum threshold.
Compute Engine automatically applies SUDs to supported machine types (like N2) operating beyond 25% of the month.
3
Assess calculator discount application behavior
The pricing calculator applies a partial/incremental discount rate for 49.3% usage, which is lower than the maximum discount rate reached at 100% usage (730 hours).
SUD pricing scales non-linearly across four usage tiers (25%, 50%, 75%, 100%).

Anahtar Kavram

Compute Engine Sustained Use Discount (SUD) mechanics in the GCP Pricing Calculator
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