HELP - HDDs not showing up on Creat RAID window

Hello.

Could you please help me because I've done some research but no luck so far and I'm not a linux expert.

I upgraded my NAS to OMV5, everything goes fine, I made the first Volume, RAID Mirror with 2 x 4TB without problems.

Added another 2 x 2TB for second Volume, the HDDs are visible on Disks Tab but not available to be selected on Create RAID Device window.

Also, all HDDs are visible on lsblk command:

lsblk

NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT

sda 8:0 0 3.7T 0 disk

└─md0 9:0 0 3.7T 0 raid1 /srv/dev-disk-by-label-xxxxxxx

sdb 8:16 0 3.7T 0 disk

└─md0 9:0 0 3.7T 0 raid1 /srv/dev-disk-by-label-xxxxxxxx

sdc 8:32 0 1.8T 0 disk

└─sdc1 8:33 0 1.8T 0 part

sdd 8:48 0 1.8T 0 disk

└─sdd1 8:49 0 1.8T 0 part

sde 8:64 0 149.1G 0 disk

├─sde1 8:65 0 145.2G 0 part /

├─sde2 8:66 0 1K 0 part

└─sde5 8:69 0 3.9G 0 part [SWAP]

Yes. Wiped, nothing. Creating a patition with FileSystem ext4 (with GParted), again nothing.

YES. After the HDD was wiped, it appears in the Create RAID Device window.

Thak you for your beautiful product and the excellent support.

All the best!