Yesterday my EX2ULTRA (firmware 5.12.108) reported two S.M.A.R.T. failures simultaneously and red LED are now on.
I’m going to replace both disks as soon as possible, BUT… I still cannot believe that the warning is really due to real problems with the disks. I think instead that it’s a problem with the NAS software. Can anyone help me to prove it? The NAS has been stable for some weeks since last autoupdate.