SharePoint BackUp, the backup utility says Guids of few Dbs are too long names

Hi,
My ultimate goal is while SharePoint BackUp, the Guids of DBs sometime creates problems with backup utility saying too long names.
So while backup and restore, do it is requirement to backup all Dbs or only content Dbs.

Now, for my new environment-
(here I am using Project server also upon same sharepoint machine.)

I have powershell which creates only admin content Dbs,not other DBs.
Pls Clarify/suggest
http://sdrv.ms/1hjMZLS

Rgds/-