SSD M.2 Storage - how?

    Hi, we are developing a new modular router with Linux LXD container support and are interested to connect a M.2 SSD to increase storage availability for containers, video streams and logging data.

    Is there any working and proved reference schematics and BOM?

    Thanks!

    M.2 SSDs are available as SATA or PCIe (NVME) devices. The PicoCoreMX8MP does not provide a SATA port, so only PCIe would be possible. But it has only one PCIe Gen 3 lane. Typically M.2 SSDs use 2 or even 4 lanes, and nowadays even Gen 4, so one lane will be rather slow. An alternative would be to use eMMC on port SD_A (this port provides an 8-bit interface) or connecting the SSD via USB 3 (up to 5 MBit/s, i.e. USB3.2 Gen 1, a.k.a. USB 3.0).


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