Why is my Drobo S rebuilding itself over and over?

This morning I noticed an email from my Drobo S stating:

Data protection is in progress. You may continue accessing your data, but please do not remove any hard drives until the data protection process has completed.

And another email, sent only one minute later stating:

Drobo S has completed rebuilding your data with the existing drives.

Then a couple hours later, I received the same two messages, again only one minute apart.

Two questions:

  1. How can I obtain more information about what is going on with my Drobo S?

  2. Should I go ahead and contact Drobo Support about this?