root@velocity-MS-7740:~# mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Fri Nov 22 15:14:39 2019
     Raid Level : raid1
     Array Size : 1023424 (999.61 MiB 1047.99 MB)
  Used Dev Size : 1023424 (999.61 MiB 1047.99 MB)
   Raid Devices : 2
  Total Devices : 2
    Persistence : Superblock is persistent

    Update Time : Fri Nov 22 19:59:15 2019
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0

           Name : velocity-MS-7740:0  (local to host velocity-MS-7740)
           UUID : c0b059e5:5e99798a:6c03dfa0:0a3465ed
         Events : 109

    Number   Major   Minor   RaidDevice State
       2       8        1        0      active sync   /dev/sda1
       1       8       17        1      active sync   /dev/sdb1