Hi,   Yes, T630 does seem to support Windows Server 2019 referring to this guide: [URL]   Though, the RAID Controller H730P does not support the OS referring to the user guide [URL] that may be the reason you're not able to find the drivers for Windows Server 2019.   Let me know if you have any questions.  
Hi, just bough a 2nd hand T630. The support states that Server 2019 is supported. Im trying to install the OS now and via the Lifecycle Controller. Server 2019 isnt shown as a supported OS for install. Okay, so ill just boot from the ISO and install - cant as Im not then able to find drivers for the Perc 730p to see the Virtual Disk. Ive updated the iDRAC to the latest version in the hope that might help, but no. I can only find drivers for Server 2016, but 2019 is shown as supported. Please can someone point me in the right direction? Thank you.
Perc 730p Server 2019 Drivers