I recently purchased a Synology NAS. It's great when it's working, however every time I wake my iMac from sleep I have to remount the drive before being able to access it. It is literally not connected anymore when I resume. This is causing all sorts of havoc with my iTunes library. This is probably a setting or something I have wrong either on the NAS on my iMac or I am connecting to it in the wrong way. Any ideas?