DS920+ SSD to HDD transfer speed

[jhlchu]

I have a single SSD setup as a place where a docker container downloads stuff, then I move them into the HDD SHR pool from the web interface (File Station). The thing is, the transfer speed only maxes out at 85MB/s. Is this just an issue with the old PCIE bus because I can get at least 113 in network file transfer from both the SSD and HDDs.