📖 ~1 min read
Table of contents
Symptom & Impact
CSV traffic remains redirected over network path, increasing latency and reducing VM or workload performance.
Environment & Reproduction
Appears after storage path instability, MPIO misconfiguration, or intermittent SAN connectivity.
Root Cause Analysis
Direct storage I/O path is degraded so cluster keeps redirected mode to maintain availability at reduced performance.
Quick Triage
Validate CSV state, storage path health, and cluster events tied to disk ownership or connectivity.
Step-by-Step Diagnosis
Inspect MPIO policy, HBA status, SAN zoning, and any recent firmware or driver changes on nodes.
Solution – Primary Fix
Restore stable direct storage path and transition CSV back to direct mode after confirming underlying transport health.
Still having issues? Our IT Solutions & Services team can diagnose and resolve this for you. Get in touch for a free consultation.
Solution – Alternative Approaches
Redistribute high-I/O workloads and throttle maintenance operations while root storage issue is remediated.
Verification & Acceptance Criteria
CSV returns to direct mode and sustained workload latency metrics align with normal baseline.
Rollback Plan
If direct mode reintroduction fails, return to redirected mode and continue service while escalation proceeds.
Prevention & Hardening
Monitor SAN fabric health, enforce driver/firmware compatibility baselines, and test path failover regularly.
Related Errors & Cross-Refs
Related to quorum instability, VM storage pauses, and intermittent cluster role failovers.
Related tutorial: View the step-by-step tutorial for Windows Server 2022.
View all Windows Server 2022 tutorials on the Tutorials Hub →
Browse all common problems & solutions on the Tutorials Hub.
References & Further Reading
Follow Microsoft CSV and failover clustering storage guidance for production-safe remediation patterns.
Need Expert Help?
If you cannot resolve this yourself, our team offers hands-on Server Management, Managed IT Services, and flexible Support Plans. Contact us today — we respond within one business day.
