A. Ensuring each host has a cache tier SSD and a capacity tier
B. Using a single NIC for vSAN, vMotion, and Management to reduce complexity
C. Setting an appropriate Failure Tolerance Method (RAID-1 or RAID-5/6)
D. Monitoring vSAN health checks regularly for early issue detection
Explanation:
A balanced design with cache/capacity tiers (A), suitable RAID levels for fault tolerance (C), and regular health checks (D) are key. Combining all traffic on one NIC (B) can create bottlenecks and is not recommended.