Installing Business Objects XI R2 on the same server (LPAR) multiple times

Question

Greetings!
My goal is to create "multiple" Business Objects XI R2 instances on a single AIX LPAR, so that I might have up to 8 Business Objects environments.  Each environment would be be used to promote reports through test and eventually production.  Yes, I know 8 environments is a lot, they won't necessarily be running simultaneiously.  We do want 8 environments, with 8 CMS databases all separated.
I belive there are two possibilities:
1.  I can create 8 separate Business Objects installs, each in their own separate directory structure, each install owned by a different user.  Each installation would use a separate set of ports statically bound to each service that needs to be accessed over a firewall (like CMS, inputFRS, outputFRS,...). 
2.  Run a single installation of Business Objects and keep sepaarate CMS databases and repositories.   I doubt this would work as I've only been able to find configurations for clustering, in which all CMS servers use the SAME CMS database.  Is this option even possible?
Does anybody have any similar experiences using AIX?  I have already attempted getting a second install running (option #1) but so far I've not been able to keep the second environement's CMS server running using statically-bound ports.  They will, however, run simultaneously on the second install without statically binding the ports.
Server details:
IBM AIX 5.3 TL-08
Business Objects XI R2 SP4
CMS database - IBM DB2 9.1.4
Reporting database - IBM InfoSphere 9.5
Server separated by clients via firewall
Users will access Infoview, some access w/Crystal Reports XI
Thanks for your consideration,
Sean Boone

Answer 1

Thanks for the replies everyone!
I've gotten the two environments running but the CMC from one environment is trying to control the CMC from the other.  For example, I have added the two installations to a single machine and set them up as follows:
boadmin - userid of "first" environment
boadminf - userid of "second" environment
CMS #1:  boenv:6400
Tomcat ports:  8080, 8443, 8005 (std)
CMS #2: boenv:5500
Tomcat ports:  5905, 1720, 1731
So when I login to the CMC on CMS #1 and check "Settings" I see the database alias that I expect.  When I logout and then login to the second CMS I see the same CMS database alias.  In other words, they are both using the same database.  However when I run the "cmsdbsetup.sh" command, it shows the correct alias for each environment.
My only thought at this point might be that since the daemons were given default names I'm going to see the same "service names" even though they are controlled via a separate name server. 
Any clues as to what might be the cause here?
Thanks again!
Sean Boone