Asus Prime X470 Pro - M.2 RAID 0 Configuration

[teixi.cat]

So, i thought it was going to be easy but seems it's not.
I have bought a pc and i got it yesterday. It has 2 M.2 SSD samsung 970 EVO 500GB (and another one i already had for OS, a SATA one)

So my intention is having the SSD Samsung 850 EVO 250GB for the OS and applications wich aren't games and a RAID 0 with both M.2 SSD Samsung 970 EVO 500GB for games.

• I went to windows disk manager and made the RAID 0 with both M.2. Windows sees it as a one disk of 930GB "properly" but when i go to task manager/performance, the disk 1 is working and the other one isn't

Image showing Use%: https://gyazo.com/27a1dcd638f11d17e34090603840248a

As you can see, they're both "D:\" but one is working while the other isn't. That's when i'm copying 20GB of data (distributed on lots of files).
So, RAID 0 isn't working as it should.

• I activated the NVMe RAID on the BIOS too, but it's not working either.

• I've tried to configure it on the BIOS with the RaidXpert2 that comes with it, but the button of "Create Array" is greyed out and i can't click it.

If i go to see "all arrays" it shows 2 arrays, 1 with 1 M.2 SSD configured as "No-RAID" and the other with the other M.2 SSD configured as "No-RAID" too.

So, my question is, why i have 2 arrays with those SSDs (i didn't do anything) and how can i "delete" them if it's needed to be able to create an array with both of them.

How do i create a working RAID 0 with those 2 M.2 SSD with this motherboard?

 

[CountMike]

Second (bottom) M.2 slot is SATA only so RAID0 may actually slow down comparing to using them separately. There are better ways to make them acting as one disk.

 

[teixi.cat]

Second (bottom) M.2 slot is SATA only so RAID0 may actually slow down comparing to using them separately. There are better ways to make them acting as one disk.

Hmmm i found my mistake. I selected extended instead of stripped. After doing some tests it was an improvement, but really small improvement (200~ mbps read and write).

But talking about what you said, on the motherboard description is said that it has nvme raid 0 for 2 m.2 or 1 m.2 and 1 pcie. It should be a huge improvement, no?

Anyway, the motherboard was faulty and the cpu was at 100°C, so, i had to return it and i asked them just what you said so they can inform me about this bottom m.2 slot.

When i receive my pc again, i'll test it again before doing raid, both m.2 to see how big the difference is between them.

 

[msroadkill612]

Second (bottom) M.2 slot is SATA only so RAID0 may actually slow down comparing to using them separately. There are better ways to make them acting as one disk.

For the record, this is false.

A few dual pcie3 slot Asus am4 mobos are tagged as dual nvme, and they are just that.

This seemingly impossible feat is achieved by switching the first pcie 3 x16 slot usually used for 16 lane dgpu, to 8 lanes. It then borrows those 8 freed lanes, and uniquely makes 2 x 4 lane pcie 3 ports available.

One is the second nvme port, and the second pcie 3 slot becomes a 4 lane slot (which could be used for yet another nvme adapter card).