EXchange server 2010

<p>I newer in exchange 2010 server, in VM lab, I'v created 02 mailbox servers(MBR1 and MBR2 "win 2k8 R2 entreprise") and hub transport server as dc (DCHUB, win 2k8 R2 entreprise)..</p><p>-1 I cannot create&nbsp; DataBase on MBR1 MBR2 or delete or even move it. I encounter this window&nbsp; </p><p><img alt="" src="http://social.technet.microsoft.com/Forums/getfile/399560" /><br /></p><p>-2 after creating DAG, and when you want to manage it I encounter this window</p><p><img alt="" src="http://social.technet.microsoft.com/Forums/getfile/399577" /></p><p></p><p>any body can help me to solve this pb.</p><p>I'm grateful&nbsp; indeed</p><p></p><p></p><p></p><p></p><p></p><p></p>