Several services now offer to quietly back up everything on your computer to a server somewhere, for a modest monthly fee, running in the background while you do whatever you were already doing. The pitch is a good one. What almost nobody selling the service tells you upfront is how long the first backup actually takes.
I wrote back in June about the asymmetry built into most home internet connections, download rates advertised loudly, upload rates barely mentioned, and this is exactly where that asymmetry stops being an abstraction and becomes a number you can watch crawl.
A typical connection uploads at a few hundred kilobits a second. A modest personal archive, a few years of photographs, some music, a handful of home videos, easily runs to twenty or thirty gigabytes. Do that arithmetic honestly, and the initial upload is not measured in hours. It is measured in days, running continuously, competing with every other website you try to load in the meantime, and if the software is not careful, it will happily saturate the connection and make browsing miserable while it works.
None of the marketing leads with this, because a service selling peace of mind does not want the first thing a new customer experiences to be a three-week wait and a noticeably slower internet connection in the meantime.
To be fair to the services, most of them are aware of the problem and have built around it. Rate limiting during active hours, resuming interrupted transfers, only backing up new or changed files after the initial pass rather than starting over. Those are real engineering solutions to a real constraint, and once the first backup finishes, the ongoing experience is genuinely closer to invisible.
But invisible only after the hard part, and the hard part depends entirely on a piece of infrastructure the customer does not control, and the provider does not fix. Until upload speeds catch up meaningfully with download speeds, and there is no obvious commercial reason for a cable operator to prioritize that, this category is always going to have an ugly week or two hiding behind the smooth pitch.