Question about Seagate Exos X24

Technically (Sata 3.5") yes, but this HDD is not on Synology's compatibility list. I myself have Exos X16 16TB in use which run without any problems. As a test I had 2 X20 with 20TB in use which were also recognised without problems. (Note when creating the raid groups that the HDD is not on the list and therefore there is no support)

Thanks for the info