Starting from the next major release, Acronis Cyber Infrastructure (ACI) will run on Linux kernel 5.x. To be able to update your cluster without service downtime, your hardware must be supported. Acronis Cyber Infrastructure with the new kernel works on the same hardware that is recommended for Red Hat Enterprise Linux (RHEL). Ensure that the hardware you are using is or going to use has the required certification and compatible with Red Hat Enterprise Linux 9.