Displays the average time / latency in seconds to perform volume disk read operations. Note 1 sec = 1,000 milliseconds. Microsoft recommend for good performance I/O latency should not exceed 25 milliseconds.
- Add additional memory
- Increase the max memory allocation
- Upgrade storage
- Make sure partitions are aligned correctly
- Indexing, look for high IO queries
- Data page compression if CPU usage doesn’t suffer
- Spread database files over other (less busy) volumes