1) I cannot open that link and it wouldn't make sense that it's related to the disks as we're talking about slower reading speeds (download from server) than writing speeds (upload to server).
2) I tried FilezillaSFTP, so uploading TO the server is going 10x faster than downloading FROM the server.
- On one of the VM's I've both down/uploaded with nftp and I'm getting the exact same results.