An administrator is tasked to optimize storage utilization in an existing VMware vSAN Original Storage...

In avSAN Original Storage Architecture (OSA)cluster, the choice of storage policy directly impacts storage efficiency and resilience:

Current Setup:

Eight-node cluster, 1 disk group per node.

VMs are usingFTT=1 RAID-1 (mirroring)policy.

Storage utilization is already at70%.

RAID-1 (Mirroring):

Each piece of data is mirrored, requiring2x storage capacity.

Space efficiency ~50%.

RAID-6 (Erasure Coding, FTT=2):

Requires a minimum of6 hosts, satisfied here with 8.

Uses erasure coding instead of full mirroring, giving ~67% space efficiency.

Provides resilience against2 host failureswhile using less space than RAID-1.

Thus, switching fromRAID-1 FTT=1toRAID-6 FTT=2reduces overall storage utilization while still improving resilience.

Why not the other options?

A. Enable Deduplication and Compression→❌In OSA, enabling this requires acluster-wide disk group reformat, which is disruptive and not the minimal impact choice.

B. Change policy to 3 failure - RAID-1→❌Increases redundancy but consumesmuch more capacity, worsening utilization.

C. Enable Compression only→❌Not available in OSA (only in ESA). OSA supportsdeduplication + compression together, not compression-only.

D. Change to 2 failure - RAID-6→✅Meets resilience requirements,reduces storage usage, and is supported on 8-node OSA clusters.