Few days ago, I finally motivate me to monitor my personal boxes. Since I known good Cacti (I use it for ~5 years now), I installed and configured the Net-SNMP provided by Solaris 10 (run /usr/sfw/bin/snmpconf or directly edit /etc/sma/snmp/snmpd.conf). And then, after add "disk" lines in snmpd.conf, I notice some values (like disk used, disk total) are defined to 0 :


snmpwalk -v2c -c xxxx katsuragi.global.asyd.net UCD-SNMP-MIB::dskTable
[..]
UCD-SNMP-MIB::dskPath.1 = STRING: /
UCD-SNMP-MIB::dskPath.2 = STRING: /home
UCD-SNMP-MIB::dskPath.3 = STRING: /data/pkgsrc
[..]