You can use the vSAN Obfuscation Map to identify the obfuscated data sent to VMware.

vSAN Obfuscation Map provides mapping of the obfuscated data sent to VMware as part of Customer Experience Improvement Program (CEIP) to facilitate communication during the Support Request process between vSAN user and VMware Global Support. Use notepad or any text editor to view the obfuscation map. For more information on obfuscation map, see the VMware knowledge base article at https://kb.vmware.com/s/article/51120.