Question : IBM Setup Disc for x3400 Server

If I want to deploy the Window 2008 R2 on IBM x3400 7976 server, should I download the ibm_utl_sguide_8.31_anyos_i386.iso or ibm_utl_sguide_8.31_anyos_x86-64.iso ?

Thanks.

http://www-947.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5079561

Answer : IBM Setup Disc for x3400 Server

*the x86-64 is the 64-bit version.