When using a vSAN storage policy with a failure tolerance method (FTM) of Mirroring and a failure to tolerate (FTT) of 1, vSAN creates two data replicas to achieve redundancy. Additionally, a witness component is needed to make a decision in the event of network partitioning or a failure of one of the replicas. Therefore, for each VMDK, there is one witness component.

With a vSAN storage policy of Failure to Tolerate (FTT) = 1 and Fault Tolerance Method (FTM) = Mirroring, the minimum number of nodes required to tolerate a single failure is 3 nodes. This configuration ensures there are two replicas of data (mirrored) and a witness component to maintain quorum during failures. However, to perform self-healing after a failure, an additional node is required to ensure that the system can rebuild the lost data and maintain its policy. Therefore, the minimum number of nodes needed for self-healing in this scenario is 4.

To install CloudArray Virtual Edition in VxRail Manager, you should navigate to Config > Market. The Market section is typically used for accessing and installing additional services and software within the VxRail management interface.

The VxRail S Series is specifically designed for dense storage workloads and hybrid storage options. It is a storage-dense platform, ideal for applications that require large storage capacities, such as virtualized Microsoft SharePoint, Microsoft Exchange, big data, analytics, and video surveillance. This makes it the correct choice for a model that supports only hybrid disks.

The VxRail G Series nodes are designed to fit four nodes in a single 2U chassis. Since the user already has three nodes in one chassis, they can add one more node to this chassis. This means they will need an additional 2U chassis to accommodate the remaining four nodes. Therefore, the total additional rack space required is 2U.