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Adaptec Storage Management Software User's Guide
I/O statistics are displayed in the Hard Drive I/O Statistics
window, as shown in
Figure 3-17 Hard Drive I/O Statistics Window
The Hard Drive I/O Statistics window displays the following
information:
I/O
Commands
Total Sectors
Cache Hits
Cache Misses
Read-Ahead
Hits
3-48
Figure
3-17.
The number of Read and Write commands issued by
the computer to the controller. If you use RAID and
caching, the number of commands issued to the
drives can differ significantly from this value.
The total number of sectors read and written from
the host computer.
The total number of sectors (read or written from
the host computer) that were found in the controller
cache and did not require a disk access.
The total number of sectors that were not accessed
from the controller cache, thus were read directly
from the disk.
The number of the cache hits for data read requests
satisfied by data held in the cache from previous
disk read-ahead operations.
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