Large file transfer across the world is difficult. Here’s our preferred method.
The problem is twofold:
- Outgoing email is typically limited to 10-20 MB and files are often 100-2,000 MB today
- Internet speed and quality is often not good enough even if large files could be emailed
Solutions that don’t work are:
- Dropbox and similar services. Dropbox allows large files, but it doesn’t help with poor internet. What happens is that Dropbox starts uploading the file, then the internet connection breaks or times out, and the upload or download has to restart, perhaps after 1-3 hours of processing. Also, confidentiality is an issue. And a lot of people don’t want to learn how to use Dropbox.
- Physically sending a USB memory stick is great, but usually takes too long. And if one file is forgotten it has to be done all over again
We recommend the following using WinZip:
- Buy and install WinZip Standard
- Compress all folders and files into one large zip-file
- If required, encrypt and password protect
- Use the Multi-Part File command to break the large file into 5 MB or 10 MB chunks if internet is bad, larger if it is good (and company allows large attachments)
- Email each of these chunk files. This can mean hundreds of emails that have to be created manually, which is a pain. But the benefit is that it works
- Send the email. If the internet is poor and the transmission is broken, only a small file transfer is lost leading to a one minute setback instead of maybe 1-3 hours setback
- We receive the files and reassemble them
With these multi-part files it is also possible to use Dropbox-like services if confidentiality is not an issue or the file has been encrypted. If internet speed is good then the chunks can be larger than 5-10 MB, but of course have to be below the limit of the service you are using.
This, in our experience, is the best method because it is reliable. It takes some work at the sending and receiving end, but it is worth it.