If you have a requirement for self-hosted evernote alternative then I believe either you have very large number of notes and each note exceeds large size or just for plain privacy reasons and your notes are very secretive (because evenote is a simple note taking/syncing app)
You should look into https://owncloud.org/ it is like open source version of dropbox which will sync more than just notes for you across multiple platforms
Please do not use OwnCloud if the files you are storing are important. There is a discussion elsewhere on the page with an explanation. TL;DR It eats your files.
Hey, sorry, I just saw your request. There's another OwnCloud discussion here on this page (just search). But we had our problem over the span of about seven months and not at all when updating. We had everything from entire directories go missing, down to individual single-page documents. It took us a couple of months to figure out what was going on, and the tension in our office was extraordinarily high as you can imagine (people becoming paranoid about the true story of what happened to their documents). Finally when we discovered that OwnCloud does this, the only solution offered was to back up the files with another application (so why even use OwnCloud in the first place??).
You should look into https://owncloud.org/ it is like open source version of dropbox which will sync more than just notes for you across multiple platforms