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SATA vs SCSI
These two excel documents are the result of running iostat on two
mail machines over the course of a few days. We broke out identical
time frames and compared the disk utilization percentage and graphed
the results. We also broke out the await times ( in milliseconds) and
graphed those. It should be noted that the SATA machine processed 20%
more mail over the time period selected due to variations because of
DNS round robin. The hardware involved in the comparision is quite
different, with different processor speeds and raid cards. Your
mileage may vary.
The two excel files are about 3 megs each because they contain the
raw data in addition to the graphs. In addition to these files I have
small gif images you can look at below.
Gif images of the graphs are avaiable here.
If you have any questions, please let me know.