The disk usage metric shows the percentage of space used on the data partition of a node. The main items stored on the disk are the commit log, config and dataset snapshots.
We recommend that disk usage is kept to less than 70% during normal running to allow temporary working space. If your cluster is regularly exceeding 70% then you should consider adding capacity or removing data. This could include adjusting the size or number of snapshots.
Instaclustr Support monitors disk use for all managed clusters and will notify you if your cluster is exceeding recommended levels of disk usage.
If your cluster is simply filling up with data then it can be easily scaled out by adding additional nodes. To do this, use the add node feature on our console or contact Instaclustr Support for assistance.