Installation manual

32
Test Drive Performance
The performance testing feature in the ATTO ConfigTool records the performance level of a drive in a RAID group
under an I/O (input/output) load generated by a host application. The information can be used to compare the
performance of each drive relative to others.
The performance feature of the ATTO ConfigTool
counts the Megabytes per second (MB/sec.) which
elapses from the time a start button is clicked until a
stop button is clicked.
Drive performance can be measured for any
combination of single drives within a RAID group or
across multiple RAID groups, or for all the drives in a
selected RAID group.
Note
The performance test can only be performed
on drives which belong to a RAID group.
The
Performance dialog box contains individual
statistics for each drive selected. You should start I/O
to the drives to be tested before beginning the test.
The collection of these statistics begins when the
Start button is pressed and continues until the Stop
button is pressed. You may press the
Reset button
and restart a test at any time.
The ATTO ConfigTool can be closed after starting the
performance test and re-opened to show the statistics
from the most recent test.
1 Start I/O from the host system.
2 Select the ExpressSAS RAID or
ThunderStream SC storage controller from the
Device Listing panel.
3 Select the RAID tab in the right panel.
4 Select the drives to be tested:
• Select individual drives from the Attached
Drives panel.
• Select a single RAID group in the RAID
Group panel.
5 Right-click on the selected drive(s) or RAID
group.
6 Select the Performance menu item.
7The Performance dialog box displays. (See
Exhibit 1.5.1--13
.)
8 Click the Start button.
9 Click the Stop button to halt monitoring.
Click the Reset button to reset the performance
values to zero at any time.
You can close the Performance dialog box
while monitoring is in progress, and then open
it later to see the performance results.
10 Stop I/O any time after you have stopped the
performance test.