I have my very first server computer. It has two disks in BIOS (fake) RAID 1. The BIOS RAID controller says the status is Normal. But I would like to know if there is a way to check from the system-side, that everything is doing fine. Can I do that? I am on Mint.# blkid/dev/sda1: UUID=6042-870C TYPE=vfat /dev/sda2: UUID=2ef42e6f-4987-46e5-aca9-872fd70a9f9e TYPE=ext2 /dev/sda3: UUID=Oz0elc-zUuh-BAK1-i19b-RZZU-YREm-DxVaNi TYPE=LVM2_member /dev/sdb1: UUID=6042-870C TYPE=vfat /dev/sdb2: UUID=2ef42e6f-4987-46e5-aca9-872fd70a9f9e TYPE=ext2 /dev/sdb3: UUID=Oz0elc-zUuh-BAK1-i19b-RZZU-YREm-DxVaNi TYPE=LVM2_member /dev/mapper/mint--vg-root: UUID=98a7a4a2-6e71-4aa9-ab48-5c4fc619c321 TYPE=ext4 /dev/mapper/mint--vg-swap_1: UUID=b62721cf-7b54-4400-92f0-f8f776566c99 TYPE=swap 
How to check RAID 1
linux;raid;raid1;fakeraid
RAID controllers present a virtual disk to the system that looks like a single disk to the operating system but is actually the array made up of multiple disks. Unless there is special support for managing the RAID controller in the operating system, the OS cannot see or check the component disks. You will have to verify the RAID array using features provided by the RAID controller itself.Since you don't seem to have much confidence in the BIOS RAID controller (you call it fake), you might want to consider disabling it altogether so that the OS sees the individual actual disks and can manage them. You can then set up Linux software RAID with mdadm.