CF-AZ-ST-09Storage

How to detect hot-tier storage gaps.

Hot-Tier Storage Gaps can quietly add recurring Azure cost when resource state, utilization, or lifecycle policy no longer matches real usage. This guide explains why it costs money, how to find it manually, and how Costframe detects it read-only.

CF-AZ-ST-09 • DETECTOR TYPE

Hot-Tier Storage Gaps

Impact: Medium
Resource: archive-blob-bucket
+€145.00/mo
Utilization Telemetry
0 IOPS / Low utilization detected
Audit Rationale

Orphaned hot-tier storage gaps found in billing records with zero active workload associations over a rolling 30-day window.

Operational Description

Azure Storage Accounts offer Hot, Cool, and Archive tiers for blob storage. Retaining historical backup files, logs, or static archive assets in the premium Hot access tier results in significantly higher monthly gigabyte costs.

Primary Root Cause

Neglecting blob lifecycle management configurations, allowing cold, historical archive blobs to reside in default Hot storage accounts.

How Costframe Detects & Verifies This

We analyze storage blob metadata and read operations. Blocks of data with zero read operations over a rolling 60-day window are highlighted as cool-tier or archive-tier candidates.

Evidence:Data block size: 4.8 TB • Time since last read access: 120 days.

Continuous cloud audits, automated

Run this detector and dozens of other cloud-waste rules across all your Azure subscriptions continuously.