SSPR config question

Hi,

Assume we have 2 different user types: staff and students.

• Student accounts reside in their own forest
• Staff accounts reside in 2 different and separate forests
• FIM resides in another separate forest (a resource forest)

We are about to deploy SSPR in the resource forest, and need the following functionality:

• When resetting the password, Staff will type in "domain\username"; Staff will use the question & answer SSPR approach
• however Students will use the OTP approach and only type in their "username" since many won't know the domain name (we will set the 'defaultdomainName' attribute in the config file)

My question is this:

• Because we need 2 different  SSPR approaches and for Students we need the 'defaultdomainName' prepopulated - will we need 2 separate instances of the SSPR Portal deployed on 2 separate servers?

Thanks,

dw