There seem to be delivery problems at the moment, and this model is currently not available from various other suppliers. As an alternative, I recommend the WD Ultrastar DC HC550 (16 TB currently CHF 278.00 compared to approx. 430.00 for the Red Pro). A better and more robust HDD in every respect at a much lower price with a 5-year warranty as well. It is objectively incomprehensible why the much more expensive consumer HDDs generally seem to be more popular than data centre drives like the WD Ultrastar DC HC550, the Toshiba MG08 or the Seagate Exos X16/X18. It is possible that many users fall for the "NAS HDD" label and believe that industrial drives (which used to be much more expensive) are not compatible with their NAS. The WD Ultrastar DC HC550 14TB even runs smoothly in my soon-to-be 8-year-old Synology DS414, although it is not listed on the compatibility list. But that's the end of it, the hardware doesn't seem to be able to cope with 18 TB.