I've got my Time Machine set up to backup to a WD My Cloud EXII, set up as a guest share per their instructions. Even turned off limiting the cpu for it. And here I am, backing up 500+ gigs, and it's taken more than 3 tries and 7 straight days of ontime. I left my computer on last night and running OVERNIGHT and all it did was 7 gigs. Annoying piece. I did a perf test and it tested at around 500, yep, FIVE HUNDRED megabits per second. Am I missing something here? Also, side note. If I stick my head near the corner of the Late 2009 imac, I can hear the PSU buzzing. Should I worry or just keep going till it dies?