Bad! Finally with Firmware 1.1.3 the DroboPro is stable - no data loss or corruption. I have mine running non-stop with two servers connected to it. First server is a Windows Storage Server 2008 connected to a 16TB NTFS volume. Second is an OpenSuSE 11.1 server connected to a 2TB ext3 volume. Speed is unremarkable, especially compared to my QNAP and ReadyNAS storage devices that outperform the DroboPro by FAR, for about the same price, with more capabilities on top of that.
BUT the real problem is that with multiple servers, like I have it set up, I have absolutely no option for remote admin. There is no dashboard, no ability to remotely monitor for faults (i.e. no mail alerts), and no ability to create new volumes, unless I shut both servers down and hook up a machine via USB do to all the admin tasks. UNFORGIVEABLE!