Product : VMware, vSAN [SDS]/7.0 U1, Enterprise
Feature : SC Data Redundancy, Disaster Recovery, Data Availability
Content Owner:  Herman Rutten
Replicas: 0-3 Replicas (1N-4N) at each active site
Erasure Coding: RAID5-6 at each active site
VMware vSAN 6.6 introduced enhanced stretched cluster availability with Local Fault Protection. You can provide local fault protection for virtual machine objects within a single site in a stretched cluster. You can define a Primary level of failures to tolerate for the cluster, and a Secondary level of failures to tolerate for objects within a single site. When one site is unavailable, vSAN maintains availability with local redundancy in the available site.

In the case of stretched clustering, selecting 0 replicas means that there is only one instance of the data available at each of the active sites.

Local Fault Protection is only available in the Enterprise edition of vSAN.