This is the wiki page giving some details on the wiki databases:

= By database =
 * nebulous is on ippdb00. It is replicated on ippdb02.
 * gpc1 is on ippdb01. It is replicated on ipp001.
 * isp is on ippdb01.

= By MySQL server =
 * ippdb00:
 * ippdb01:
 * ippc17:

Backup policy is defined [wiki:DatabaseBackups here].