I have a RAID 1 which was managed by Intel Rapid Storage Technology drivers. Im migrating this system to Fedora Linux and I ran mdadm --assemble --scan and it seemed like there was an array available via /dev/md126..I successfully mounted it and accessed the data I needed.  But then I wanted to check the health of the array, the BIOS is reporting completely intact.I ran [root@localhost ~]# sudo mdadm --detail /dev/md126/dev/md126:      Container : /dev/md/imsm0, member 0     Raid Level : raid1     Array Size : 1953511424 (1863.01 GiB 2000.40 GB)  Used Dev Size : 1953511556 (1863.01 GiB 2000.40 GB)   Raid Devices : 2  Total Devices : 1          State : clean, degraded  Active Devices : 1Working Devices : 1 Failed Devices : 0  Spare Devices : 0           UUID : **OMMITTED**    Number   Major   Minor   RaidDevice State       -       0        0        0      removed       0       8        0        1      active sync   /dev/sdaFrom this output it seems that only 1 device is attached? Also there is a degraded status listed. sda and sdb should both be members of this array. Here is the output of my status command:[root@localhost ~]# cat /proc/mdstatPersonalities : [raid1] md126 : active raid1 sda[0]      1953511424 blocks super external:/md127/0 [2/1] [_U]md127 : inactive sda[0](S)      3028 blocks super external:imsmunused devices: <none>Not sure what md127 is representative of here either. In anycase here is my /etc/mdadm.conf :# mdadm.conf written out by anacondaMAILADDR rootAUTO +imsm +1.x -allHow should I configure my existing array properly without corrupting data?@Miorrin****************************EDIT ADDED LSBLK -f - ****************************$ lsblk -fNAME              FSTYPE     LABEL          UUID                                                      MOUNTPOINTsdd                                                                                                   sdd2            ntfs                      *OMITTED*                                          sdd1            ntfs       System Reserved  *OMITTED*                                          sdb               ddf_raid_m                *OMITTED*ddf1_New_VD                                                                                         sde                                                                                                   sde2            ntfs                      *OMITTED*                                          /run/mediasde1                                                                                                sdc                                                                                                   sdc2            crypto_LUK                *OMITTED*                       luks-*OMITTED*   LVM2_membe                *OMITTED*                       fedora-root ext4                      *OMITTED*                      /   fedora-swap swap                      *OMITTED*                      [SWAP]   fedora-home ext4                      *OMITTED*                      /homesdc1            ext4                      *OMITTED*                      /bootsda               isw_raid_m                                 The two 1.8T volumes should be in the same raidThank you all for any assistance!
Understanding Linux software RAID, which devices are connected to my mdadm RAID 1?
linux;fedora;raid;mdadm