There is a built in windows command called “Robocopy.exe” which will mirror a drive and just copy over changes. Just check you get the syntax the correct way around by testing of a different folder first
I use robocopy. Copying about 800 GB takes maybe 2 hours, to an oldish HDD in an external caddy connected via USB. An internal HDD would generally be faster. Doing a complete copy of the backup on the HDD to the cloud (OneDrive in my case, via ethernet) takes 1-2 days or maybe more.
If you are adding music that often you must be constantly removing the USB drive from the Atom, adding new files, then waiting for the Atom to rescan the whole library which takes quite a while. You might find it easier to use a NAS as to store your primary music library and run a UPnP server on that so that it’s always available for adding music and editing as well as playback.
Any entry level NAS from Synology, QNAP or Netgear would be fine, no need for anything fancy. There are very simple incremental backups you can do from here to other network or USB storage.
+1; Robocopy or rsync can do the same, but may be more for the command-line-style people.
(And there’s likely many more programs out there.)
NAS is of course convenient and can offer a lot more services (depending on NAS size, model, use cases, and number of people living in the same household).
But it’s always powered on, needs firmware updates, and I recently read seemingly weekly, that there’s some security whole to patch in some vendors system. (Which is likely not a real issue, as long as it is used only locally, i.e. not exposed to usage “from internet”.)
If the current setup works for you, keep it. If you’re interested, look into this.
A reminder to all that the OP is using a Windows operating system, and not OSX.
@Pauljdh in case you are interested in trying the command line option (which is free and will already be there on your PC), below is an example command line that you might use to mirror C:\MUSIC across to D:\MUSIC (obviously change these to match your setup). It will just copy over the changes, and gives you a good summary report at the end on how well it did
Well it would but so would any backup. Probably the only way around that is to have multiple full backups to different media, done at different times, but even then if you have a corruption, how do you know when it occurred. I personally always like the idea of keeping a full back on a drive at your parents or Childs house, and change annually.
Of course I’d say it’s less important in this case as we are talking about CD Rips, so you always have the original