Dropbox Use-Cases & Speed Test There are three ways you can use Dropbox – Via a Browser Via a local synchronized directory using Dropbox app on a "normal" operating system (Mac OS / Windows) Via a plugin within a NAS operating system (like "Cloud Sync" on a Synology NAS). Dropbox excels at local synchronization.  Dropbox App Speed Test 55GB on 1GB line. Should take <20 mins if line isn’t congested. 13 minutes so the upload speed was ~72 MB/s. ✅ It’s basically a wash for upload/download of files Google Drive vs Dropbox, especially given congestion variability.  Dropbox on NAS (Like a Synology) Works great, just don’t put active project files on there. Dropbox on an External Drive OWC did an amazing write up of how to use an external hard drive as a Dropbox. It is here . I’ve done this on/off for years. Big warning: if the drive gets disconnected while dropbox is running, Dropbox will think you deleted your entire Dropbox. Thankfully, DB keeps a log of events and you can undo that event and then resync your drive. Once you realize this, you will be relieved, but it will take a lot of time. Since this has happened to me I recommend: setting it up to online only for everything, but sync your whole dropbox, then sync folders and files as you need them, and do the things that are less of a priority over the weekend.