What do you mean by 'mirrored servers'?
If you're talking about a server cluster, then SBS can't do it. Must have Advanced Server.
If you're talking about creating and maintaining a duplicate of your data, there are many options available.
FYI,
SBS has restricted capabilities...
Will not allow any other DC's
Cannot join a forest
Many other restriction
Also,
I have an office in Boca.
If you want help, let me know.