You can try install using DUD method:
https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/...
providing the megaraid_sas dd-megaraid_sas-07.707.51.00-1.el8_1.elrepo.iso
from elrepo:
https://elrepo.org/linux/dud/el8/x86_64/
Just to avoid spending too much time with this, please note that Anaconda installer has a
bug and DUD is not working on oVirt Node. If you need DUD you need to use CentOS and not
oVirt Node.
We are working with Anaconda Installer team to get this fixed but it will take time. I
would also suggest to start planning an hardware refresh when budget will allow it.
Dealing with obsoleted hardware won't help having a stable datacenter.