Are download upload wifi different?

Question

System administration

There is an Internet channel from the provider 100 megabits (checked ftp to the server with the provider's AS, the speed is 93 to 92 megabits) enters the aruba iap 207 access point. Default settings. 2 frequencies work 2.4 and 5. I connect with a laptop via Wi-Fi frequency 2.4 to Aruba and measure the speed first, the speedtest shows 40 reception 35 return. After I measure on ftp (the same server) shows 40 reception 18 return. The work is carried out on the n protocol, the air is clean, there are practically no other people's points, the utilization of the channel is 10 percent. The question is why such discrepancies in reception and return? How to fix it? Thank you

Answer 1

There may be many options.
For example disk. In the case of a speedtest, it is not used at all, but the speed of FTP depends very much on it.
It is likely that the disk is the bottleneck in the case of FTP.