Hello emreh ,

Thank you for your question! The best way we can identify issues with drives would be to look at them via the command line interface. Can you log in to the OneFS CLI and run the following:

# isi devices -d

Where indicates the node you have experienced a drive failure on. This will give you a list of the status of the drives that looks like this:

In your case, you should see a drive in a status that is not healthy. We can try to re-add this drive by running:

# isi devices -a add -d :bay

If the add action fails, please let me know and I can look in to this further for you.

It's also possible that you have been sent new drives that are of a type or have a firmware rev that your version of OneFS doesn't recognize. Which version are you running?

Occasionally, I've had to reboot the node if it is not detecting that a drive has been replaced. That is certainly not the designed behavior, but when you find a solution that works...