We updated our public demo server to XtreemFS 1.5. To tryout XtreemFS without setting up an own server, just install the client and mount our volume:
mount.xtreemfs demo.xtreemfs.org/demo ~/xtreemfs_demo
For testing you can create any directories and files as you like. Please do not upload anything illegal or copyrighted material. For legal reasons every file create/write is logged with the IP address and timestamp. Files are automatically deleted every hour.