Sorry to bother you with something that might have been already dealt with but I can't find my precise problem. Let me explain.
I'm using a Raspberry Pi 4B+ with the RockHat in order to build a small RAID unit with 2 SSD EVO 250 Go (maybe later 4 of them, we'll see).
Under Gparted, there is no problem, I see my system on the microSD and the two SSDs (sda and sdb).
I followed the script installation for OMV and after the system has boot up I'm trying to access OMV.
1- under 'raid management' nothing is there so I tried to create an array.
2- I can choose from mirroring, stripping or types of RAID but no unit is shown there so, the system tells me to add at least two.
3- I went to 'disks' only to notice that my sda is not shown, only the sdb.
From there, I'm lost. Why only sdb is shown? Why can't I at least see sdb under 'raid management'?
Please help. I'm trying to solve this, reading numerous forums and posts for about 4 weeks