The SA 10 installer requires two extra parameters to make this work: --nomount and --distro.
As a prerequisite you need to manually mount the install media on core and if you have this setup, on the remote database. The mount point must be the same on all servers.
Another prerequisite is to set TNSADMIN variable on the core and also create tnsnames.ora in /var/opt/oracle and in $ORACLE_HOME/network/admin according to the SA documentation
For example if the primary.iso is mounted on /mnt/sa-primary/disk001 then you run the installer with these parameters:
/mnt/sa-primary/disk001/opsware_installer/hpsa_install.sh -c /var/tmp/cdf.dc2.xml --nomount --distro_loc=/mnt/sa-primary/disk001