A Linux administrator receives a call from the network operations team that one of the database applications is down on a Linux server. The Linux server is configured with RAID 1 for redundancy, and the array /dev/md0 consists of two devices called /dev/sda1 and /dev/sdb1 . After looking at the status of the RAID 1 array in the /proc/mdstat file, the administrator discovers the RAID 1 array is degraded and the disk on which the database application was installed appears to have failed. 
Which of the following steps should the administrator take to remove the device from the RAID array md0 ? (Choose two.)
A) mdadm /dev/md0 --remove / dev/sdb1 mdadm /dev/md0 --remove / dev/sdb1
B) mdadm /dev/sdb1 --fail / dev/md0 mdadm /dev/sdb1 --fail dev/md0
C) mdadm /dev/md0 --fail / dev/sdb1 mdadm /dev/md0 --fail
D) mdadm /dev/sdb1 --remove / dev/md0 mdadm /dev/sdb1 --remove
E) racadm --remove / dev/sdb1 racadm --remove
F) racadm --fail / dev/sdb1 racadm --fail
Correct Answer:
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