Exchange Enterprise Design (v2003) re: storage group management

Just a reminder for myself.

Exchange 2003 Enterprise allows up to 4 storage groups, with up to 5 databases within (db’s share the transaction logs of their storage group).

However, there is a ‘5th’ storage group…

You can create up to four additional storage groups as needed for a maximum of five storage groups per server (with one of the storage groups, called the recovery storage group, being reserved for database recovery operations).