md0 - RAID array state

mdadm

@asgard ~]$ sudo mdadm --detail /dev/md0
/dev/md0:
        Version : 1.2
  Creation Time : Sat Mar  8 17:05:13 2014
     Raid Level : raid6
     Array Size : 5860267008 (5588.79 GiB 6000.91 GB)
  Used Dev Size : 2930133504 (2794.39 GiB 3000.46 GB)
   Raid Devices : 4
  Total Devices : 4
    Persistence : Superblock is persistent

    Update Time : Mon Mar 25 16:35:16 2019
          State : clean
 Active Devices : 4
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : boson:0
           UUID : 8c574785:ef0e8e36:b159bc37:e4d2c588
         Events : 302363

    Number   Major   Minor   RaidDevice State
       6       8       17        0      active sync   /dev/sdb1
       7       8       33        1      active sync   /dev/sdc1
       5       8       49        2      active sync   /dev/sdd1
       4       8       65        3      active sync   /dev/sde1

==============================

$boson: $ sudo mdadm --detail /dev/md0

/dev/md0:
        Version : 1.2
  Creation Time : Sat Mar  8 17:05:13 2014
     Raid Level : raid6
     Array Size : 5860267008 (5588.79 GiB 6000.91 GB)
  Used Dev Size : 2930133504 (2794.39 GiB 3000.46 GB)
   Raid Devices : 4
  Total Devices : 4
    Persistence : Superblock is persistent

    Update Time : Sat Jan 17 09:06:56 2015
          State : clean
 Active Devices : 4
Working Devices : 4
 Failed Devices : 0
  Spare Devices : 0

         Layout : left-symmetric
     Chunk Size : 512K

           Name : boson:0  (local to host boson)
           UUID : 8c574785:ef0e8e36:b159bc37:e4d2c588
         Events : 2082

    Number   Major   Minor   RaidDevice State
       0       8       17        0      active sync   /dev/sdb1
       1       8       33        1      active sync   /dev/sdc1
       2       8       49        2      active sync   /dev/sdd1
       3       8       65        3      active sync   /dev/sde1