Malfunctions in low-intensity 24/7 use
I've put it in my personal NAS (it's been on almost 24/7 for a little over 2 years but I don't use it very intensively) and from time to time it has problems that cause it to be temporarily excluded from the ZFS volume (I don't really understand the exact problem). You have to reboot the machine and it starts up again: it's worrying and abnormal. The other two drives (WD and Seagate) didn't have any problems.
As far as I'm concerned, Toshiba is finished.