I have rsync'ed debian amd64 to my local (Omnios) box using the recommended ftpsync too.
The size of my mirror is 143 GB. I was led to believe from debian and other sources it should be around 80 GB.
here my ftpsync.conf:
MIRRORNAME=`hostname`
TO="/opt/local/share/httpd/htdocs/debian"
RSYNC_PATH="debian/"
RSYNC_HOST=mirrors.dotsrc.org
LOGDIR="${BASEDIR}/log"
LOG="${LOGDIR}/${NAME}.log"
ARCH_EXCLUDE="alpha arm armel armhf hppa hurd-i386 i386 ia64 kfreebsd-amd64 kfreebsd-i386 m68k mipsel mips powerpc s390 s390x sh sparc source"
LOGROTATE=14
LOCK="${TO}/Archive-Update-in-Progress-${MIRRORNAME}"
rsync-ftpsync.error.0 has no errors.
Why is my mirror so large?