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This is a ZFS snapshotting service for Solaris, OpenIndiana, SmartOS and friends. It takes periodic snapshots of the datasets you specify, at whatever intervals you like. You tell it how many of each kind to keep around and the rest gets cleaned out.
bash <(curl -sk https://raw.github.com/calmh/zsnapper/master/install.sh)
This will install into /opt/local/zsnapper and drop default config and manifest into /opt/local/etc and /opt/custom/smf respectively. If the config is already present it won't be overwritten, so this can be used for upgrades as well.
# npm -g install zsnapper
Copy the zsnapper.ini to a suitable place, start zsnapper with the location of the config file as the only parameter. For Solaris, there's an example SMF in zsnapper.xml.