How to check RAID information on Linux?

1 year ago
William Carter
1 minute

In Linux systems, you can use the mdadm command to view RAID information.

  1. Firstly, make sure that the mdadm tool is installed in the system. If it is not installed, you can use the following command to install it:
  2. Install mdadm using the command sudo apt-get.
  3. Use the following command to view information about RAID devices in the current system:
  4. Execute the command “sudo mdadm –detail –scan”
  5. This command will display information about the configured RAID devices, including device name, RAID level, number of devices, and status.
  6. You can use the following command to view detailed information about the specified RAID device:
  7. Display detailed information about the RAID array named /dev/mdX.
  8. Replace /dev/mdX with the actual RAID device name, such as /dev/md0.
  9. To check the real-time status of RAID devices, you can use the following command:
  10. Monitor the RAID status by running the command “watch -n 1 cat /proc/mdstat”
  11. This command refreshes the status information of the current RAID device every 1 second.

Note: the “sudo” in the above command is used to obtain administrator privileges.

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