Code
$ sudo cat /proc/mdstat
Personalities : [raid1]
md0 : active raid1 sda[0]
5860391488 blocks super 1.2 [2/1] [U_]
bitmap: 5/44 pages [20KB], 65536KB chunk
unused devices: <none>
$ sudo blkid
/dev/mmcblk0p1: LABEL="boot" UUID="CE83-8CE1" TYPE="vfat" PARTUUID="c5ac05a5-01"
/dev/mmcblk0p2: UUID="2666ed46-1bb6-4ad7-ab5d-2ccde455c5e5" TYPE="ext4" PARTUUID="c5ac05a5-02"
/dev/md0: LABEL="ShareMirror" UUID="d256d04a-7edb-4657-9ef0-24df6794a8dd" TYPE="ext4"
/dev/sda: UUID="59bf5327-c227-55d9-1ed3-6698723e8259" UUID_SUB="d0cf684d-2b7f-317e-24f2-63966f45b726" LABEL="XXXXOMV:XXXXMirror" TYPE="linux_raid_member"
/dev/zram0: UUID="1479358e-d71e-40f0-b14b-2a23ea4a565e" TYPE="swap"
/dev/sdb: UUID="59bf5327-c227-55d9-1ed3-6698723e8259" UUID_SUB="18d6f1c5-8bf7-ea83-b715-ea57ff9d6825" LABEL="XXXXOMV:XXXXMirror" TYPE="linux_raid_member"
/dev/zram1: UUID="87ce520b-34a3-4941-a610-a6f5f4150146" TYPE="swap"
/dev/zram2: UUID="0293ab32-26db-4be5-a90a-1ad2bdf3f62a" TYPE="swap"
/dev/zram3: UUID="88adab84-ddbc-4cb4-b886-df930cfde655" TYPE="swap"
/dev/mmcblk0: PTUUID="c5ac05a5" PTTYPE="dos"
$ sudo fdisk -l | grep "Disk "
Disk /dev/ram0: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram1: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram2: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram3: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram4: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram5: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram6: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram7: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram8: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram9: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram10: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram11: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram12: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram13: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram14: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/ram15: 4 MiB, 4194304 bytes, 8192 sectors
Disk /dev/mmcblk0: 3.7 GiB, 3997171712 bytes, 7806976 sectors
Disk identifier: 0xc5ac05a5
Disk /dev/sda: 5.5 TiB, 6001175125504 bytes, 11721045167 sectors
Disk /dev/md0: 5.5 TiB, 6001040883712 bytes, 11720782976 sectors
Disk /dev/sdb: 5.5 TiB, 6001175125504 bytes, 11721045167 sectors
Disk /dev/zram0: 115.8 MiB, 121384960 bytes, 29635 sectors
Disk /dev/zram1: 115.8 MiB, 121384960 bytes, 29635 sectors
Disk /dev/zram2: 115.8 MiB, 121384960 bytes, 29635 sectors
Disk /dev/zram3: 115.8 MiB, 121384960 bytes, 29635 sectors
$ sudo cat /etc/mdadm.conf
cat: /etc/mdadm.conf: No such file or directory
$ sudo cat /etc/mdadm/mdadm.conf
# mdadm.conf
#
# Please refer to mdadm.conf(5) for information about this file.
#
# by default, scan all partitions (/proc/partitions) for MD superblocks.
# alternatively, specify devices to scan, using wildcards if desired.
# Note, if no DEVICE line is present, then "DEVICE partitions" is assumed.
# To avoid the auto-assembly of RAID devices a pattern that CAN'T match is
# used if no RAID devices are configured.
DEVICE partitions
# auto-create devices with Debian standard permissions
CREATE owner=root group=disk mode=0660 auto=yes
# automatically tag new arrays as belonging to the local system
HOMEHOST <system>
# definitions of existing MD arrays
ARRAY /dev/md0 metadata=1.2 name=XXXXOMV:XXXXMirror UUID=59bf5327:c22755d9:1ed36698:723e8259
# instruct the monitoring daemon where to send mail alerts
MAILADDR email@gmail.com
MAILFROM root$ sudo mdadm --detail --scan --verbose
ARRAY /dev/md0 level=raid1 num-devices=2 metadata=1.2 name=XXXXOMV:XXXXMirror UUID=59bf5327:c22755d9:1ed36698:723e8259
devices=/dev/sda
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Seagate Backup Plus Hub 6TB
The external hardrive was disconnected from the server.
Any assistance would be appreciated.