When I install RHEL8.x I cound’t discover my RAID Controller’s devices on Install Storage set-up optional.When I try to google find the resolutions I know a large number of storage controller device’s drivers has been removed from RHEL8,which means the Dell R710/R610 installed H700 RAID controller card won’t be supported RHEL 8.X natively.

Nevertheless you can still install RHEL8 on these machines with use of driver update disk(DUD).

Setup DUD

Using this link below ,you are specifically looking for the megaraid_sas drivers.

dmesg | grep raid
[    3.702959] megaraid_sas: loading out-of-tree module taints kernel.
[    3.703082] megaraid_sas: module verification failed: signature and/or required key missing - tainting kernel
[    3.705684] megaraid_sas 0000:03:00.0: FW now in Ready state
[    3.705687] megaraid_sas 0000:03:00.0: 63 bit DMA mask and 32 bit consistent mask
[    3.705915] megaraid_sas 0000:03:00.0: firmware supports msix        : (0)
[    3.705918] megaraid_sas 0000:03:00.0: current msix/online cpus      : (1/16)
[    3.705919] megaraid_sas 0000:03:00.0: RDPQ mode     : (disabled)
[    3.750024] megaraid_sas 0000:03:00.0: controller type       : MR(512MB)
[    3.750027] megaraid_sas 0000:03:00.0: Online Controller Reset(OCR)  : Enabled
[    3.750029] megaraid_sas 0000:03:00.0: Secure JBOD support   : No
[    3.750030] megaraid_sas 0000:03:00.0: NVMe passthru support : No
[    3.750032] megaraid_sas 0000:03:00.0: FW provided TM TaskAbort/Reset timeout        : 0 secs/0 secs
[    3.750036] megaraid_sas 0000:03:00.0: megasas_init_mfi: fw_support_ieee=67108864
[    3.750069] megaraid_sas 0000:03:00.0: INIT adapter done
[    3.750071] megaraid_sas 0000:03:00.0: Jbod map is not supported megasas_setup_jbod_map 5389
[    3.795034] megaraid_sas 0000:03:00.0: pci id                : (0x1000)/(0x0079)/(0x1028)/(0x1f17)
[    3.795039] megaraid_sas 0000:03:00.0: unevenspan support    : no
[    3.795041] megaraid_sas 0000:03:00.0: firmware crash dump   : no
[    3.795042] megaraid_sas 0000:03:00.0: jbod sync map         : no

If you specific DUD drivers that you need for RHEL8 is below address to download.

https://elrepo.org/linux/dud/el8/x86_64/dd-megaraid_sas-07.707.51.00-1.el8_1.elrepo.iso

When you downloaded the DUD ISO driver.Using the dd to burn it in another USB or DVD media devices.

dd if=dd-megaraid_sas-07.707.51.00-1.el8_1.elrepo.iso of=/dev/sdc

Installation System

The install process is as follows:

• Download RHEL8.x media file and burn to usb or dev devices media.
• Download DUD drivers in iso format and burn to usb drive.
• Boot with both RHEL8 and DUD mounted before booting Install RHEL.
• Installer should detect the DUD iso and install the proper drivers.

During booting RHEL8 Installer and When you see a countdown on the screen.At this time interrupt the installer with the TAB key and append the following to your boot options last.

inst.dd=/dev/sdb

On my system, the DUD was /dev/sdb and the RHEL8 install media was /dev/sda.

Soon after you can view the RAID Devices find it out.

Install it usually.