Chris I'm fairly certain that I know the answer to both of your inquiries, but I am unable to find any supporting documents internally or externally to confirm. I submitted an information request for verification a few days ago, and I'm waiting to hear back from that. I expect to have some information by the end of next week.   I'm quite certain that you cannot put them in a RAID array using a hardware or driver based RAID controller. The PCIe SSD switch controller routes the PCIe SSDs through the system board to the operating system bypassing the controller. If non-PCIe SSDs are detected in the slot then the drives are routed normally through the PERC. Software RAID is the only RAID option for PCIe SSDs.   It is documented that they can be used to boot from select systems. This list of systems is not available anywhere I can find. I am assuming that this functionality is not available in any of the 13g servers we have released so far. It is likely a feature that is planned to be added with a firmware update to existing 13g servers, or will be a feature of a 13g server that has yet to be announced. I'm waiting for clarification on both of your questions. I'll update you when I get more info. Thanks
can these new NVMe PCIe SSD 2.5in drives be used as a boot drive?  also can multiples of them be put in a raid array?  thanks Chris
400GB Dell PowerEdge NVMe MLC Express Flash PCIeSSD, 2.5in, Hot-plug