KB450044 – Replacing Disks in a ZFS Pool in FreeNAS

Last modified: October 1, 2019
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In the event that one of your hard disks enters a faulted or unavailable state, you may need to go through the process of replacing a drive in your Storinator.

This process is quick, simple, and our units fully support hot swapping of drives in our arrays.

Pictured below is the procedure for replacing a drive within a FreeNAS RAID array:

You will need: A replacement hard drive and physical access to the unit.

  1. Navigate to your Storage tab in the FreeNAS WebGUI.
  2. Click on the name of the pool: In this case, “tank”
    After selecting tank, on the bottom of the page, there will be an option to view the “Volume Status.”

  1. Volume Status will show you the status of your array; similar to the functionality of checking the status of your zpool:

  1. From here, click on the drive that you wish to replace. In this case, I’ve selected da10p2

  1. After making the drive go offline, it will lose the Linux based name that it was assigned and appear as such, making it ready to be physically removed from the unit:

  1. You can now replace the physical drive in the unit. Then, on the bottom ribbon, click “Replace.” A window will pop up, prompting to select the member disk that needs to be replaced.

  1. After replacing the drive, click “Online,” on the bottom ribbon:

  1. After clicking yes, a notification will appear at the top for a moment, notifying that the disk replacement has been initiated. This will also prompt the array to re-silver.

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