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Moving Big Files Like a Boss: A Guide to Not Growing Old While Waiting for Transfers

2 min readJan 29, 2025

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Moving Big Files Like a Boss

Ever sat there watching a file transfer progress bar move slower than a snail having an existential crisis? Yeah, we’ve all been there. Today, I’m going to show you how to move your gigantic files from any server instances like it’s 2025 (spoiler: it actually is!).

The “I Just Want It To Work” Method

If you’re just getting started, here’s your bread-and-butter solution:

  1. First, make sure your SSH key is on your server. It’s like giving your digital house key to your server’s front door:
ssh-copy-id user@instance-ip

OR manually add your public key to:

~/.ssh/authorized_keys
  1. Then, use this turbocharged SCP command:
scp -T -c aes128-gcm@openssh.com user@instance-ip:/path/to/remote/file /local/path

That -T -c aes128-gcm@openssh.com part? It's like switching from your grandmother's old bicycle to a sports car. It uses a faster encryption method that won't make your CPU cry.

The “I’m a Speed Demon” Method

For those who’ve evolved beyond mere mortals and want to squeeze every last byte of transfer speed:

rsync -avz -e "ssh -T -c aes128-gcm@openssh.com -o Compression=no" user@instance-ip:/path/to/remote/file /local/path

This command is like the FastPass at Disney World — it lets you skip all the unnecessary overhead and gets straight to business.

Pro Tips (Because We’re Fancy Like That)

  • Running transfers during off-peak hours? Smart. Running them while also downloading your favorite 4K cat videos? Not so much.
  • If your transfer is slower than your coffee break, check if you’re in the right GCP zone. Being in Asia while your instance is chillin’ in Europe isn’t helping anyone.
  • Split massive files into chunks. Think of it as eating a sandwich — you wouldn’t shove the whole thing in your mouth at once (or maybe you would, I don’t judge).

The “Trust Me, I’m an Engineer” Troubleshooting

If things aren’t working:

  1. Check if your SSH key is actually on the server (yes, I’ve forgotten this too)
  2. Make sure you have read permissions on the file (chmod is your friend)
  3. Verify you’re not trying to download the entire internet in one go

Remember: the difference between a junior and senior engineer isn’t that seniors never make mistakes — they just make them faster and know how to fix them while looking like they meant to do it all along. 😎

In Conclusion

Whether you’re moving a 10GB dataset or your entire meme collection, these methods will get your files moving faster than your manager’s deadline changes. And remember, if anyone asks why you’re optimizing file transfers, just say you’re “implementing a distributed content delivery optimization framework.” Works every time.

Happy transferring! May your bandwidth be high and your latency low. 🚀

P.S. If you’re still using FTP in 2025, we need to have a serious talk.

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Vatsal
Vatsal

Written by Vatsal

Hi 👋, I’m Vatsal. A passionate Software Developer | Fun fact: Funny, Anime-addict, Binge Watcher. | Follow Me on GitHub: https://github.com/backendArchitect

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