As a configuration option for the 13th generation Dell PowerEdge server such as R630, R730 and R730XD, etc., the Internal Dual SD Module (IDSDM) provides dual SD interfaces which can be configured in a mirrored configuration (primary and secondary SD), providing full RAID-1 redundancy. (Note: dual SD cards are not required, the IDSDM can operate with a single SD card but no redundancy.) The IDSDM also becomes a non-removable device, which makes it feasible to host a small footprint Windows Server OS. In addition, the IDSDM has added the USB 3.0 support, which can enhance its performance for the deployment and OS boot process.
With the upcoming Windows Server 2016, the lightweight, small footprint and customizable Nano server can be running on the IDSDM module. There are a couple of methods to install Nano Server which can be used on the internal SD card:
This document co-authored with Rui Freitas (Microsoft) describes the steps required to create and deploy Nano Server image on the IDSDM with the bootable USB flash drive.