Frequently crashes and reboots coming out of standby

Hi

I have a Drobo (4 disk) connected to my Mac Pro via Firewire 800. When I put my Mac to sleep the Drobo goes to standby - great. However, often when I wake my Mac the Drobo will crash with 4 red lights and reboot. Not always, but fairly frequently.

Anyone else getting this?

Thanks
Gary

http://support.datarobotics.com/app/answers/detail/a_id/103