all the content files are separate from the main poser app installer so you have to back up the content separately. There are 10 installers total, not including SRs. Just backing up the SRs will not save the main app files, since the SRs are just updates and require the full app to be of any use. Total it's around 6 to 8gb. Took me 2 DVDs to get all of it (avg 4gb max space on each). If you downloaded the main app after the most recent SR then I think it is included so shouldn't need to back up SRs as well. Not sure on that 100% tho. Doesn't hurt to include them anyway just to be sure.

 

~Shane