: VMFS is a block-level, clustered file system that allows multiple ESXi hosts to read and write to the same storage simultaneously—a feature not present in Windows-native NTFS or ReFS.
| Approach | Read Performance | Write Support | Risk of Corruption | Use Case | |----------|----------------|---------------|--------------------|-----------| | vSphere Client download (Network) | Low (10-100 MB/s) | No | None | Admin file retrieval | | Third-party driver (read-only) | Native SAN speed | No | Low if LUN is offline | Disaster recovery | | Third-party driver (read-write) | Native SAN speed | Yes | | Not recommended | | RDM to Windows VM | Native SAN speed | Yes (NTFS) | None (but not VMFS) | Direct-attached storage for VM | vmfs windows
In modern virtualized data centers, VMware vSphere environments rely on VMFS to enable multiple ESXi hosts to concurrently read and write to the same LUN (Logical Unit Number) on shared storage (SAN, NAS). Simultaneously, Microsoft Windows dominates the physical server and workstation landscape. A common operational need arises: how can a Windows administrator directly access files on a VMFS datastore without going through the ESXi host’s management interface (e.g., for rapid file-level recovery or forensic analysis)? Understanding the limitations and available solutions is critical for data integrity and uptime. : VMFS is a block-level, clustered file system