Try fully power cycling the server and updating the iDRAC firmware. If that doesn’t work, use a bootable USB or Lifecycle Controller to recover the RAID firmware.

Please find below my solution and a few suggestions regarding the above issue.

Resolution Steps (Follow in Order)

1. Perform a Complete Power Drain (Very Important)

. This often recovers the controller.

. Gracefully shut down the server
. Disconnect all power cables
. Remove the server from the rack (recommended)
. Press and hold the power button for 30–60 seconds
. Leave the system powered off for at least 10 minutes
. Reconnect the power and boot the system

=> Check:

iDRAC → Storage
Lifecycle Controller
POST (Ctrl+R)

If the controller appears, stop here.

-------------------------------------------------------------------------------------

2.  Reseat the PERC Controller and Cache Module

If still missing:

1. Power off and unplug the server
2. Open the chassis
3. Remove:

. PERC 730P controller
. Cache module
. Cache battery

4. Clean and reseat everything firmly
5. Reinstall and power on

Check again in iDRAC and POST.

-----------------------------------------------------------------------

3.  Clear NVRAM / System Configuration

If reseating does not help:

1. Boot the server
2. Press F2 → System Setup
3. Select System BIOS
4. Choose Clear NVRAM
5. Save and reboot

 This forces the system to re-enumerate PCI devices.

--------------------------------------------------------------------------

4. Update BIOS and iDRAC (If Accessible)

If the system boots but the controller is still missing:

. Update to the latest BIOS for R630
. Update to the latest iDRAC 8 firmware

Do not reattempt the same PERC firmware via iDRAC yet.

------------------------------------------------------------------------------

5. Attempt PERC Firmware Recovery via OS or Bootable ISO

If the controller appears at POST but not in iDRAC:

1. Boot from:

. Dell Bootable Firmware ISO, or
. OS-level DUP (Windows/Linux)

2. Downgrade or reflash:

. PERC H730P firmware (earlier stable version)

This only works if the controller is detected at BIOS level.

----------------------------------------------------------------------------------

6.  Controller Firmware Corruption (Most Likely Case)

If:

. Controller does not appear in POST
. Not listed in BIOS, iDRAC, or Lifecycle Controller
. Power drain and reseat fail

=> The firmware flash has corrupted the PERC controller.

 Resolution:
Replace the PERC H730P controller

Dell treats this as a hardware failure caused by firmware corruption.

Root Cause

Certain PERC firmware updates on 13G servers via iDRAC can fail silently
Controller firmware becomes corrupted
The device stops enumerating as a PCIe device
iDRAC reports RAC0503 because it cannot communicate with the controller

Recommendation

Always update PERC firmware using Dell Bootable ISO or OS-based DUP.

Always ensure:

. Stable power
. No active workloads

. Update Drivers
. iDRAC and BIOS are updated first