Matrixstore runs a consistency check of the existing RAID array on the nodes every first weekend of the month.
This check can take a reasonable amount of hours depending on the size of the Nodes in your Cluster leading to the presence of a similar warning to the one in the image above when you check your Administration Tool.
There is no need for any action and this is an expected automated maintenance action.
If you need any further clarifications regarding this matter, please do not hesitate in reaching our support team using our support portal