Product : Microsoft, S2D [SDS]/2.0, Datacenter
Feature : Flash Purpose, Flash, Storage Support
Content Owner:  Herman Rutten
Summary
Read/Write Cache (hybrid)
Write Cache (all-flash)
Persistent storage (all-flash)
Details
Hybrid solutions based on Flash + HDD):
- Flash is the Read/Write cache;
- HDD is the persistent storage layer.

All-flash solutions based on NVMe + SSD:
- NVMe is Write Cache only;
- SSD is the persistent storage layer.

When using only SSD or only NVMe in an all-flash solution, caching can be disabled.