Hard drives show up in Disks but not RAID and not mounted

I'm having some issues implementing RAID with 4 1TB hard drives.

I didn't know that you couldn't have them in Filesystems and stuff beforehand but after some Googling, I deleted the Filesystems and did a quick format on all the drives.

However, they still do not show up in RAID Management after.

I saw this thread and wanted to try using the command (wipefs -a <device>) but cannot because the drives aren't mounted (?) or the pi doesn't see them.

I'm using Pi4 with Dual Quad Sata Hat (https://wiki.radxa.com/Dual_Quad_SATA_HAT).

This is the output from when I do, df -h.

Filesystem      Size  Used Avail Use% Mounted on
/dev/root       117G  2.5G  110G   3% /
devtmpfs        1.7G     0  1.7G   0% /dev
tmpfs           1.9G   28K  1.9G   1% /dev/shm
tmpfs           759M  2.8M  757M   1% /run
tmpfs           5.0M  4.0K  5.0M   1% /run/lock
tmpfs           1.9G     0  1.9G   0% /tmp
/dev/mmcblk0p1  253M   31M  222M  12% /boot
folder2ram      1.9G   67M  1.8G   4% /var/log
folder2ram      1.9G     0  1.9G   0% /var/tmp
folder2ram      1.9G  272K  1.9G   1% /var/lib/openmediavault/rrd
folder2ram      1.9G  2.4M  1.9G   1% /var/spool
folder2ram      1.9G   12M  1.9G   1% /var/lib/rrdcached
folder2ram      1.9G  4.0K  1.9G   1% /var/lib/monit
folder2ram      1.9G   32K  1.9G   1% /var/cache/samba
tmpfs           380M     0  380M   0% /run/user/1000
tmpfs           380M     0  380M   0% /run/user/0

Any help would be appreciated!

Zitat von macom

In OMV you cannot create RAID with USB connected devices. The sata HAT also uses usb.to connect to the RPi.

Zitat von Zoki

USB RAID is not supported and as I see that, the hat just converts USB to SATA and may be recoginized als USB anyway.

Ah, I see. RIP. Is there a work around?

I am assuming this is new to OMV 6? Because in this video he has the same setup and he is able to implement RAID but I believe it is OMV 5.

Zitat von geaves

No he hasn't, at 13:30 mins he clearly shows how to create an array using the cli, whilst this is doable it is not supported!!

I didn't watch the video all the way through.

I stopped watching after the setup, he skipped how he set up his RAID until where you've pointed it out.

I understand it is not supported, I thought it was doable on older versions of OMV because he was able to do it (without context mentioned previously).

Thanks!

Zitat von macom

There have been lots of issues with RAID created on USB connected drives. Users lost their data. USB is just not a suitable connection for setting up a RAID.

What do you want to achieve? Maybe we can propose other, more reliable solutions.

I understand :).

I wanted to make a relatively small and portable NAS with the Pi 4 and the SATA hat thing I got.

It would be used to store media files for a Plex server. 4 1TBs acting as a singular 4TB disk would be nice instead of 4 individual 1 TBs but like you said it isn't an optimal solution with USB connected drives.

Zitat von Soma

Use the mergerfs plugin.

It will ser all drives as 1.

Do you have any links to any documentation that I can read on how to do this?
Is it as simple as installing a plugin and doing somethings or much more than that?

Zitat von gderf

There is a link to the mergerfs documentation available in the mergerfs plugin or you can read it directly here:

https://github.com/trapexit/mergerfs

I was looking for something with OMV specific lol. But thank you.