BI performance counter: Disk Read Bytes/sec

Applies to

Operating System


Displays the total size in bytes of read operations on the volume.

This counter can be used to form a baseline of storage usage. There is no rule of thumb for this counter as acceptable throughput is determined by workload and the level of storage available. If storage is utilized too frequently you can use the Suggested solutions below to reduce it.

Resolved by


Suggested solutions

  1. Add additional memory
  2. Increase the max memory allocation
  3. Upgrade storage
  4. Make sure partitions are aligned correctly
  5. Indexing, look for high IO queries
  6. Data page compression if CPU usage doesn’t suffer

Additional research

How To: Troubleshooting SQL Server I/O bottlenecks
SQL Server I/O Performance


To track BI performance metrics – consider using ApexSQL BI Monitor, a web application that monitors system, SSAS, SSIS and SSRS performance in real time.

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