Part 1 http://www.youtube.com/watch?v=DabbaTZhN5s Part 2 http://www.youtube.com/watch?v=OmfIuLC1JDE Sorry for the poor quality, I used my Blackberry Curve as I have nothing else one me. I need help trying to figure this out. I have a Seagate 320gb 7200.10 hard drive inside a Vantec Nexstar 3 NST-360FBSU-BK enclosure and use firewire800 to connect it to my Macbook Pro. Anyway here are the scenarios that happen. Power settings are set to NOT power down disks, on Battery and AC power. 1. Computer is idle, Hard drive in enclosure spins down, beach ball and won't work until I manually cut power to enclosure. 2. Computer is idle, Hard drive in enclosure spins down, beeps repetitively (see Part 2 Youtube video for frequency of sound), beach ball and won't work and won't stop beeping until I manually cut power. 3. Computer in use. Eject disks, then I hear one or a couple beeps, everything is normal (Part 1). 4. Computer in use. Eject disks, then I hear multiple beeps, see Part 2 So I'm brainstorming here, but I believe the Hard drives are spinning down regardless of the power settings. I googled it and looks like people have used cronjobs to touch a hidden file every so often to keep the discs spinning (Western Digital MyBooks suffer from this). So I found this applet on macupdate called "Keep Drive Spinning v1.1" which I haven't fully tested yet. I have two partitions on the enclosure so I set the app to touch both. The Mac partition every 30 seconds and the Windows partition every 60 seconds. http://www.macupdate.com/info.php/id/31158/keep-drive-spinning So hopefully this will prevent scenarios 1 and 2 from happening but what about scenarios 3 and 4? Does the Oxford 934DSB chip not do a good job of parking the head? Or does my Seagate drive have some sort of weird parking scheme as well. Or maybe the combination of the two. I'm pretty sure this is not a Hard drive failure since it's still running fine for a couple months. I'm curious to see if the Rosewill enclosures with the Oxford 924DSB chipset suffer from the same problem. Or the OWC enclosures as well.