Asus Hyper m.2 RAID as system drive - fakeRAID

[Hugh Welles]

Hi All,

 

Thanks again for spending your valuable time looking at my post!

 

Goal: install big sur/monterey on an NVMe raid

 

I have an Asus hyper m.2 gen 4 pcie card and a corresponding X570P mobo. I can create a fakeRAID in the bios (line 2 = 4x 500 gb NVMe drives). 

 

Problem: When Big Sur boots it shows up as 4 separate drives. I'm ok with installing this as a software RAID if that's possible. I just need some help.

 

I've seen this. But there are no OC instructions, so don't know where to start.

 

Any help at all would be excellent! Thanks!!

 

I'm working with:

OpenCore (0.7.6)

X570P MOBO

Ryzen 7 5800

TPLink Archer TX50E

 

 

Edited December 14, 2021 by Shaneee
https://www.insanelymac.com/forum/topic/275941-very-important-please-read-about-tonymacx86-and-iatkos-m-y-ec-sr/

[etorix]

Some terminology: The Asus Hyper M.2 is not a RAID card, it is a (passive) adapter which relies on PCI bifurcation by the motherboard. What the BIOS does is not "fake RAID", it is a software RAID.

 

There is no need for "OC instructions", you can create a software RAID in macOS with DiskUtility (File>RAID Assistant…) or with the command line (type

diskutil appleRAID create

to get help). The question is: Do you REALLY want to boot from a RAID array?

RAID 0 (stripe) is unsafe. It may be desirable from a scratch disk (temporary data), but is not recommended for a boot drive (permanent data).

RAID 1 (mirror) is safe, but the case for further improving read speed (and only read) of the boot drive over a single NVMe drive (possibly PCIe 4.0)  is unclear. A mission-critical server with a requirement for "five nines" availability would boot from a redundant array, but why bother for a workstation?