by Colin Fraser.
erm.. there seems a bit of an issue about what "Experimental" means in Moodle. Essentially, it usually says, "all good to go" and I have only noted it in connection to admin tools used in Moodle. I might be wrong, but everytime I have paid attention to Experimental, has been some admin tool.
Using the zip backup tool is OK, but it has a number of limits, one of which is that things can become corrupted, another is file size limits, and so on. To get around those, Emma is quite correct in recommending the tgz "Experimental" backup, it works well, is more certain backup, and less affected by end file sizes.
You may also want to go back and read Tim's reply, and ponder the implications of that.
