Hello @DavidTurner , I wanted to thank you once again, the cluster is green, backed up and on a new disk 
all of my research data is intact and now backed up locally on a NAS (with disk level redundancy) and in the cloud 
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I wanted to ask if it is worthwhile for metricbeat or other component of Elastic Stack to keep an eye on disk errors? I know there isn't a specific module that looks at hardware health level but based on my experience it could be an excellent indicator to be monitored under stack monitoring?
If you feel this is a meaningful addition I can open a GitHub feature request.
Thank you and have a wonderful week ahead