BI performance counter: Avg. Disk Queue Length

Applies to

Operating System


Returns the average number of requests queued on the volume. Due to SANs and virtualization this counter is no longer valid to use.

Resolved by


Suggested solutions

  1. To determine disk performance issues, refer to Avg. Disk Read / sec and Avg. Disk Write / sec counters

Additional research

High Avg Disk Queue Length and finding the Cause
SQL Server disk performance metrics

⇐ Back to index