Oracle storage solutions in the form of ZFS appliances are widely used in oracle focused and none-oracle focused IT footprints. This is for good reason as Oracle provides a good storage solution with the ZFS storage appliance range. I already posted a number of blogposts on ZFS, including on how to analyse the ZFS storage appliance and on how to use the ZFS storage appliance simulator.
The Oracle ZFS storage appliance simulator is a Oracle VirtualBox appliance which can be used to use for testing and learning purposes.
To add to the already mentioned posts is now this post, providing you the below video on how to manage and monitor the Oracle ZFS storage appliance which might provide you additional information when exploring the options of ZFS appliances.