Storage, Data Files

I don't have a link, and I don't, I'm afraid, altogether trust anything that the Adobe 'helpline' has to say about this. But I can tell you what Audition does, and point out what the snags and pitfalls are:

When you record something - anything, really - don't ever edit the original unless it's really easy to redo; always edit a copy. The original is your safety mechanism, if you like, and that needs to be stored locally, either on your machine or onto an external drive physically directly connected to it. In other words, not any form of cloud storage. The only things you should store on the cloud are backup or distribution copies, or perhaps working copies if you are sharing them with somebody else. But the important word here is 'copies' - no originals.

Now, the act of storing. Whatever you do, don't try to store anything directly to the cloud. With the best will in the world, it's a flaky connection you've got (whether you like it or not) and the speed at which it handshakes is distinctly variable - even on a 'fast' system. And that's no way to save audio, under any circumstances. So what you do, if you want to place a copy of a file into cloud storage, is save it locally on your machine first, and then copy that to the cloud. This gets around the handshaking issue, because it's then using the OS's file handling to transfer the file, not the Audition Save mechanism, which was never intended to carry out this task. The OS is, of course, optimised for this type of transfer.

Multitrack sessions: The only thing that Audition automatically backs up are session files - it does not back up audio. You have a choice about where the session files are backed up,  and under no circumstances I can think of is the best solution to back them up to Adobe's cloud system - for reasons that should now seem obvious. Here is a screengrab of what your Auto Save and Backup settings should look like:

For each project you do, start a new session folder on your machine, and store everything in it, including the audio - that's as safe as it can get. And when you've done that, you may make a copy of the entire folder to a cloud-based system if you want to. I have never done that, or felt the need to. Keeping everything in a single folder is the only sensible way forward if you are doing a lot of projects - anything you need from another session to use in the one you're currently working on you should copy from where it is into your current folder. Obviously if you are working with somebody else, it makes transfer much easier, but even if you are on your own it's a good idea.

External drives: You might think that having a single large one is a good idea, but I'm not so sure. If it crashes you've lost a lot of work. If, on the other hand, you use smaller ones and have several, you'd lose far less if the unthinkable happens. I can personally attest to the truth of this! Another thing you might like to consider for long-term storage that's pretty cheap is SDHC cards. You can store a lot of data on one of these, and they are very small. And if you buy decent ones, they pretty much don't fail. It's flash memory, and it stays put. Yes you could use SDXC as well. Don't use anything flash as a working drive though - stick to 'normal' USB drives. Personally I use SSDs, and it's the usual thing - don't buy the cheapest ones; go with names you've heard of.

I think that covers most of it...