Configure Raid on Inspiron 3910

RAID 0 is what I use and I know what it does. But for the life of me I can’t get to the raid boot screen. I am also familiar with how to setup RAID. Please read my complete post and look at the pic.

Not sure why you want RAID 0.

If one of the SSDs in RAID 0 fails, you'd lose everything because RAID 0 stores different pieces of each file ("stripes") on  each drive for "faster access". Since SSDs are so much faster than old-fashioned HDDs, is RAID 0 going to provide any real performance benefit, vs the risk of losing everything?

How to configure RAID on a Dell Computer

I could see setting up a RAID 1 config, which stores everything on both drives, with one being the backup.  So if one fails, you have the other drive and won't lose everything.

But nowadays, there's easy/convenient software, some free (eg, Macrium Reflect), that can back up one drive on another drive automatically, on a schedule, either as full backups or just incremental backups, without the hassles of RAID...

I don't know if this document is current, but check it out. I think the drives are "Non-RAID" only because they aren't yet part of any RAID volumes.

I have RAID turned on as Pictured

Yes according to that document I have RAID. but like I said it wont let me configure the drives.

If you look at number 7 on the link you posted you will see I do not get the Raid bios post.

Hmm... I'm actually getting the same behavior on my Vostro 5890. The RST menu doesn't offer the "Create RAID Volume" option, even though I have two 1TB HDDs in it which theoretically could comprise a RAID volume.

I poked around the web for users with the same issue, and someone posited here that though you can install multiple SATA drives, the RAID option may be unavailable because only one drive at a time is supported. I can't back that up but my system has a similar restriction and exhibits the same behavior, so who knows?

So Dell support is telling me that its the hard drives and that they are not compatible with the PC RAID system and that I need a raid card installed. I never have had to add a raid card before. So I ended up removing my two 512gb Raid drives from my other Dell with RAID 0.  They are detected in Device Configuration in the bios as NON-RAID Physical Drives..? But when I boot to windows they show they are set to RAID 0 with the Intel Optane Memory and Storage Management??  What is going on here?Detected as NON RAID drivesDetected as Raid0

That I believe is when they are selecting a boot drive… All I want to do is raid a data drive in which I have been doing for years on other systems I have.

You should not be using RAID-0.

SATA-3/600 SSDs are fast enough. If you want faster, you install a NVMe-SSD in motherboard slot or PCIe-Addin-card.

All that said, if you must do this thing ...

Set both the RAID in BIOS. Both Blank and uninitialized (no partitions). Clean install Windows-11. Install Optane Memory and Storage Management inside Windows-11. Manage your RAID volume.

EDIT: Just looked closer at your pic. If PM991a-NVMe is the bootable C-Drive, you should not need to clean install, but the two matching SATA-SSD still need to be completely blank (try a "Diskpart Clean" on them).

Sorry if I've provided bad advice. Trying to help just based on experience but I haven't played with RST RAID. I have just the (sketchy) website to go on. 

For what little it's worth... the advice you got from Dell Support makes zero sense to me. As for what happened after moving your SSDs, I'm GUESSING that RST stores config metadata on the drives, and the driver sees them as a volume even though the firmware doesn't have a clue. I'm also guessing that since the system's not trying to boot from the volume it just works -- the firmware has no pre-boot need to read the data on the drives.