Ultra 4 Drive Replacement and Upgrade

I've now got all four 3TB WD drives fitted and the re-sync complete :-). I'm just copying all the data back onto the NAS which will take a few hours.

I had a right game with finding screws to mount the new drives. I'm sure the NAS came with some screws but that was three years ago (or maybe more) so they are long gone. I ended up robbing screws from around the case which I replaced with regular computer pan heads (of which I have loads). I found that you can take the panels off which gives you four screws straight away but internally there are other screws that can be removed and replaced with pan heads. There's a convenient gap between the outer panel and the case which is enough for it to slide over a pan head screw. I managed to recover the 8 screws this way which is all I needed.

I've checked the load cycle count after 18 hours and it's still at 1 which I'm pleased to see. Most of that time was during the re-sync but there was certainly a good portion where the heads could have been unloaded if the timer was short. From what I've read the problem seemed to be confined to the 4TB WD red drives though.

Thanks for your help.