Background
Recently, I helped a colleague in our department transfer a large file of over 30GB from their macOS laptop to the department’s Win7 office computer. The challenges we faced were:
- WeChat only supports files up to 1GB.
- If we compress the file into volumes and send via WeChat, we have to download more than 30 individual files one by one.
- Uploading the original file of over 30GB to Baidu Cloud requires a membership.
- After giving up on network tools, we tried using a USB drive, but the old computer in the department couldn’t recognize my USB (reason unknown).
- Both devices were connected to the department’s wireless network, and I tried using scp or rsync to transfer from Mac to Win7, but Win7 couldn’t start SSH (most online tutorials are for Win10; installing the OpenSSH package on Win7 didn’t work, possibly due to missing environment variable configuration?).
- Finally, I found a LAN online file transfer tool; although the transfer speed was frustratingly slow (grandpa-level router, only 5mb/s), it took 2 hours but the transfer was completed.
Introduction
The maximum single transfer size for online files is 64T, instant sending and receiving, the preferred choice for LAN file transfers.