http://support.crashplan.com/doku.php/getting_started/installing_crashplan
Move the downloaded tar.gz file into /var/spool/pkg/
mv CrashPlan_2010-03-08_Solaris.tar.gz /var/spool/pkg/
Unpack the archive.
tar -xzvf CrashPlan_2010-03-08_Solaris.tar.gz
Install the CrashPlan package:
sudo /usr/sbin/pkgadd
Start CrashPlan Engine:
sudo /opt/sfw/crashplan/bin/CrashPlanEngine start
Start CrashPlan Desktop:
sudo /opt/sfw/crashplan/bin/CrashPlanDesktop
To enable CrashPlan PRO as a service (as root):
svccfg import /opt/sfw/crashplan/bin/crashplan.xml
svcadm enable crashplan
check that the service has come online proplery (then load client)
svcs -a | grep crashplan
online 21:18:43 svc:/crashplan:default