Bug 2130206

.ReaR is now fully supported also on the 64-bit IBM Z architecture Basic Relax and Recover (ReaR) functionality, previously available on the 64-bit IBM Z architecture as a Technology Preview, is fully supported with the `rear` package version 2.6-9.el8 or later. You can create a ReaR rescue image on the IBM Z architecture in the z/VM environment only. Backing up and recovering logical partitions (LPARs) is not supported at the moment. ReaR supports saving and restoring disk layout only on Extended Count Key Data (ECKD) direct access storage devices (DASDs). Fixed Block Access (FBA) DASDs and SCSI disks attached through Fibre Channel Protocol (FCP) are not supported for this purpose. The only output method currently available is Initial Program Load (IPL), which produces a kernel and an initial ramdisk (initrd) compatible with the `zIPL` bootloader. For more information see link:https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/configuring_basic_system_settings/assembly_recovering-and-restoring-a-system_configuring-basic-system-settings#proc_using-a-rear-rescue-image-on-ibm-z-architecture_assembly_recovering-and-restoring-a-system[Using a ReaR rescue image on the 64-bit IBM Z architecture].