This is a research dedicated to practical implementation of Microsoft Storage Spaces Direct. It is a part of a series of posts about S2D and features a detailed comprehensive instruction on building a fault-tolerant 4-node setup. Storage Spaces Direct is the next step of Storage Spaces, meaning it is an extension of the current SDS for Windows Server. Storage Spaces Direct utilizes SMB3 for all intra-node interaction, including the latest SMB Direct and SMB Multichannel. The testing of S2D is hot right now, so StarWind is doing its part as well. This setup is meant to withstand node failures and the post reveals how exactly it performs in this respect.