I used Cura 2.6.2. to slice it and it came out without any problems.
Make sure to select "Touching Buildplate only" when you use support, because otherwise it will be very hard to get the support out of the printed hooks.
A raft is not needed as the surface area that it sticks to pretty large when you are using support.
I used GRRF PLA at 205°C on a bed with 60°C and 100% Fan speed (1st layer off), 120mm/s move speed and 60m/s printing speed (first layer 30mm/s).
Post-Printing
Removing the support completely is very important, especially in the areas of the hooks in the front and back and the groove where the controller PCB slides into.
I used some adhesive rubber foam to prevent the HDD from bouncing against the aluminium panels. Be careful with the HDDtop only to place the rubber foam at the sides where the screws are.
Putting too much pressure on the harddisk top shell or glueing something over the breathing hole can break your Harddisk!