DiskSuite Tool displays a subset of the raw statistical data provided by the kstat(3K) interface. (Refer to the kstat(3K) and iostat(1M) man pages for more information.)
Because DiskSuite Tool uses the kstat interface, it can only present disk-level statistics, not slice-level.
You can drag and drop objects from any of DiskSuite Tool's windows to the Statistics Graphs window. This includes the Metadevice Editor canvas, the Objects list, the Slice Browser window, and the Disk View window.
When you drag a slice to the Statistics Graphs window, you effectively drag the entire disk. You cannot get slice-level statistics.
State database replicas, hot spare pools, and individual slices cannot show statistics.
Tip: A good way to start using statistics is by first looking at the metadevice's Load value. Next, examine whether reads or writes seem responsible. You can then add the disks themselves that make up the metadevice and view each disk's load.
In general, the raw throughput data and the Load value seem to be the most useful values to watch over time.