A Sun ZFS Storage Appliance is equipped with an advanced DTrace-based facility for server analytics so you can examine the details of different layers of the operating system stack. Analytics provides real-time graphs of various statistics, which you can save for later viewing. It is designed for both long term monitoring and short-term analysis.
Concepts - analytics overview
Overhead - performance overhead of statistics
Statistics - about the available statistics
Open Worksheets - the main page for viewing analytics
Saved Worksheets - saved analytics worksheets
Datasets - manage analytics statistics
Settings - define a data retention policy