Thanks in part to this thread, I was able to get btsync installed and running on my WD My Cloud Mirror 8TB. I set up one synchronized folder as a test, and also tested the camera roll backup from the Btsync iOS client. It worked great for a couple days, but then randomly btsync stopped running. The webserver (port 8888) wasn't responding, and when logging in via SSH I could verify that btsync was no longer in /usr/bin where I had placed it, and my /etc/init.d/btsync was also no longer there. Thinking it was a glitch, I reinstalled, set up my folders again, and all was good for another day or two and then the same thing happened, it seems that somehow my modifications are getting clobbered. Perhaps the drive reboots itself (I have it set to not sleep)? Is it something to do with the way the RAID works between the two drives? Is /usr or /etc off-limits? Should I put btsync in /mnt/HD/HD_a2/Nas_Prog, does that protect it? And if so, how do I make sure btsync restarts after a reboot? Anyone have any suggestions?