Is the storage local to the host or network connected?
The error points towards a issue with accessing the storage. For local storage this could be due to some driver/firmware issue. And in case of network storage I would ping the storage node and see if there is a issue with the network link.
Check with storage team if there was any issue at their end and also check the datastore path policy configured on all ESXi in cluster and what is the recommended path policy per storage vendor. If the configured policy on ESXi is different than the policy recommended by storage vendor, change to latter as per their recommendation.