The bottom pipe represents Write activity between the System and the Datastore.The top pipe represents Read activity between the System and the Datastore.The bottom pipe represents Write activity between the System and Controller.The top pipe represents Read activity between the System and Controller.A controller works as an interface between the motherboard and other components, and makes sense of the signals going to, and coming from the CPU. The Controller box(es) display the controller in your environment. The System box represents the underlying storage in your monitored environment. Select the auto-refresh Play button to enter the Real Time mode. The active mode is controlled with the auto-refresh toolbar button. The Disk Activity tab has two modes, Real Time and History. The bottom pane displays graphs showing read and write latency, IOPS and throughput for the disk or file chosen in the top pane, or middle pane. The middle pane displays activity metrics in either a hierarchical disk system format or database/virtual hard disk/ virtual machine disk list format.
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The top pane of the display shows a graphical representation of the entire disk system as Windows sees it. The Disk Activity tab provides a patented graphical disk analysis system that breaks down disk activity and latency at the controller, physical disk, and file level, highlighting bottlenecks at any point in a disk system. For more information about troubleshooting WMI on your system, see the WMI Troubleshooting MSDN article.ĭisk bottlenecks represent one of the most common sources of performance problems for Windows and SQL Server. Additional Information: If the Disk Activity tab or the Disk Space tab does not display, there could be an issue with WMI on the system you're monitoring.
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