Hello All. i am having an issue that I have been unable to troubleshoot my way out of on my own. I am hoping that someone here might have some suggestions.
I have purchased the ASUS Pro WS WRX90E-SAGE SE motherboard and am experiencing an issue when using multiple Hyper M.2 x16 Gen5 cards with non-DRAM enabled SSDs.
According to documentation for both devices, I should be able to install 30 PCIe 4.0 SSDs across the 7 Hyper M.2 x16 Gen5 cards, plus the 4x onboard M.2 slots. I am able to install 30 of any PCIe 4.0 SSD that includes DRAM on the SSD (EX: Micron MP600, Samsung 980 Pro, ETC.). However, if I install any model of PCIe 4.0 SSDs that DO NOT include DRAM and utilize Host Memory Buffer (HMB), the system will hard-lock with an error during POST once there are more than 14 drives installed in any configuration/slot. This does not occur on the first boot after installing the SSDs, but will occur after the first cold/warm reboot after installing the drives.
Once the system is hard-locked, it requires a full BIOS Recovery (BIOS Flashback) process in order to get it into a working state again. It doesn’t matter what slots/hyper cards/etc the SSDs are installed into. As soon as I install the 15th HMB enabled drive into any slot, the client will fail to POST with the VGA LED and CODE 62 on the LED panel. No amount of removing/re-seating hardware and re-booting that I have performed will get the client back into a working state. Once the BIOS Recovery has been performed and only 14 (or less) HMB enabled SSDs are installed, it POSTs again without issue. Without the BIOS Recovery process, the client will POST almost immediately to the VGA LED/CODE 62 on every boot cycle.
Supported M.2 Device Layout
Onboard M.2: 4x PCIe 4.0
Hyper M.2 1-5: 20x PCIe 4.0 (5x 4DUT per Card)
Hyper M.2 6: 2x PCIe 4.0 (PCIe_6 limited to only x8)
Hyper M.2 7: 4x PCIe 4.0 (1x 4DUT per Card)
ASUS Pro WS WRX90E-SAGE SE
AMD Ryzen Threadripper PRO 7665WX
32GB (2x16GB), Samsung M321R2GA3PB0-CWMXJ
Add-In Cards:
7x Hyper M.2 Gen5
Here are a list of BIOS settings that I have enabled/disabled to try to address this issue.
Disabled:
Redfish Support
Resizable Bar
SR-IOV
HD AUDIO
10GB LAN1
10GB LAN2
Power Delivery S5
WIFI Controller
Bluetooth Controller
Serial Port
USB4 Controller
FAST BOOT
Enabled:
PCIe ARI Support
PCIe ARI Enumeration
PCIe Ten Bit Tag Support
Issues persists across all released BIOS versions, up to 1203.