VCOPS - Issue with stagnant stats + SSO question

Hello Everyone,

I'm currently trailling vcenter operations manager 5.7.0 (5.7.0.0-1073531).

So far so good but 2 questions:

1. How can I enable single sign on (i.e. integrate it with my AD) as I have my vCenter Server logons?
2. On friday, one of the datastores in one of my sites went offline (inaccessible to host) and then came back up. But vCOPS is still showing it in a "Fault" state and doesn't seem to show it has recovered. I've already re-started th vApp but this hasn't resolved the issue. How can I fix this?