Should I backup the master, model and msdb databases on a SQL instance?

Hello All,

I have configured backups for my Microsoft SQL 2003 and 2008 R2 databases. The backup solution that I am using is DPM 2012 (I am not sure if this is a relevant information).

I am currently backing up all databases on the SQL instances including some databases with the following names:
master, model and msdb.

My question is, Do I need to backup these databases as well?

I have not excluded them from my backups because I am not sure what they are needed for.
LuiLui77Asked:
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Steve WalesSenior Database AdministratorCommented:
Yes you should.

Refer Microsoft's recommendations on this matter:

https://msdn.microsoft.com/en-us/ms190190.aspx
https://technet.microsoft.com/en-us/library/ms188274%28v=sql.105%29.aspx

Master contains information about the settings in your system (logins etc)
Model is the base model used for everytime you create a new database.

They don't necessarily need the frequency of backups for a production application database, but you should have something there in case of a disaster.
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Scott PletcherSenior DBACommented:
Actually you may need to back up the master db more frequently than the others, depending on what is occurring on your server, since master is only full backups, not differential or tran log backups.  Books Online lists the specific reasons master would need backed up.
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LuiLui77Author Commented:
Thank you Steve!
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