I'm quite new to OMV and trying to setup a NAS. I used to be on FreeNAS but for multiple reasons, decided to go onto OMV. I've built a new install on a USB of OMV4, updated all the features and now am under 4.19 OMV with Linux kernel 4.17, if I'm not mistaken.
On FreeNAS, I had 2 Seagate 2TB drives in mirror and I bought 2 new HD to increase capacity. I'm not looking at transferring data from FreeNAS to OMV (I read that the ZFS systems are not exactly compatible so I copied everything on an external hard drive).
When I want to create a RAID, I can not see the drives under RAID management > Create, while I can see them under Disks. I have wiped both of them beforehand (quick erase, not a secure one). The interesting bit is that I can see the two new disks but not the old ones.
Other pieces of info
Proliant microserver N54L
Any thought will be more than welcome!