From Tech Support.

You are using thin provisioned volumes and what this message is saying is that if you filled all of your thin provisioned volumes

there would not be enough space in the default pool to make up for it. This message is generated any time a new volume is created, the array restarts or when certain

processes on the array restart. In this case there was a process on the array that restarted itself causing this message to be generated. Our engineering team has been notified of that and will

investigate. In any event no action is required on your part and the message is nothing to be concerned with at this time.