I receive the below message when attempting a MoveRequest from my 2010 server to my new 2013 server. I have successfully moved other mailboxes after seeing a similar message and restarting the MRS. I have tried the same with this mailbox move and it doesn't resolve. There isn't anything in the event viewer that points me in any direction. I have rebooted the target and source servers. I have run the MoveRequest from the PSShell and the console both return the same results. Any ideas or help would be great as I'm stuck and don't know why this mailbox is not moving or what I can do to resolve "unfavorable server health".
Informational: The request has been temporarily postponed due to unfavorable
server health or budget limitations. MRS will attempt to continue processing
the request again after 9/18/2015 6:53:36 AM.
Job is waiting for resource reservation. MRS will continue trying to pick up
this request. Details: Resource reservation failed for 'Mailbox Database
0869134059/MdbWrite' (CiAgeOfLastNotification(Mailbox Database 0869134059)):
load ratio 1.79769313486232E+308, load state 'Critical', metric 2147483647.
This resource is currently unhealthy.