📖 ~1 min read
Table of contents
Symptom & Impact
Frequently accessed data remains on capacity tier and hot workload latency rises unexpectedly.
Environment & Reproduction
Appears after tier policy changes or prolonged heavy write periods that delay optimization jobs.
Root Cause Analysis
Tiering jobs are not completing or policy thresholds do not match real access patterns.
Quick Triage
Check optimization task status, tier free space, and recent workload shifts by volume.
Step-by-Step Diagnosis
Inspect tier distribution metrics and verify scheduled optimization task execution and completion states.
Solution – Primary Fix
Adjust tiering policy and run optimization to rebalance hot blocks onto performance media.
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Solution – Alternative Approaches
Pin critical datasets to performance tier temporarily while long-term policy tuning is validated.
Verification & Acceptance Criteria
Hot data placement improves and latency metrics align with expected performance tier behavior.
Rollback Plan
Revert policy adjustments if capacity exhaustion risk increases, then re-stage with smaller scope.
Prevention & Hardening
Monitor tier occupancy and schedule optimization checks after major workload pattern changes.
Related Errors & Cross-Refs
May coincide with burst write latency and dedup schedule conflicts.
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References & Further Reading
Use Microsoft Storage Spaces tiering guidance for balancing performance and capacity in mixed workloads.
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