This section reports the total number of disk I/O checks, and the number of checks returning I/O.
Disk I/O Checks Total Disk I/O Checks 732.9 21988.0 87952 n/a Checks Returning I/O 83.8 2512.5 10050 11.4 % Avg Disk I/Os Returned n/a n/a 0.00020 n/a
