Apologies if you get 2 copies of this, I just want to make sure to reach everyone.
As noted previously our primary database cluster is suffering hardware issues and so we are moving services to another cluster.
Our bugzilla database is next to be moved, and that will happen Sunday December 8th starting at 8am Eastern. Given the size of the database I expect the service to be in read only mode for a couple of hours while the data is transferred.
If you have any questions please let me know.