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The Disk panel tracks the performance of the disk used by your monitored SQL Server. Unexpected spikes in latency, throughput, or SQL Server IO may warn you about the beginning of a serious performance issue. Chronically high disk metrics can signify an insufficient IO subsystem, or excessive or inefficient IO activity on the server. Use the Disk view on the Resources tab to track several key disk statistics over a period of time. For additional information, see How to get Get the disk performance details.
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