Storage System Hardware Owner's Manual

Planning: MD3200 Series Storage Array Terms and Concepts 55
Monitoring MD3200 Series System Performance
You can use the Performance Monitor to select virtual disks and RAID
controller modules to monitor or to change the polling interval. Keep these
guidelines in mind when using the Performance Monitor:
• The Performance Monitor does not dynamically update its display if any
configuration changes occur while the window is open. You must close the
Performance Monitor window and reopen it for the changes to appear.
• Using the Performance Monitor to retrieve performance data can affect
the normal storage array performance depending on the polling interval
that you set.
• If the storage array you are monitoring begins in or transitions to an
unresponsive state, an informational dialog appears. The dialog informs
you that the Performance Monitor cannot poll the storage array for
performance data.
To monitor the performance of the arrays:
1
Open MDSM and select the appropriate storage array.
2 Open the Array Management Window (AMW) for the selected storage
array
3 In the AMW, select Storage Array  Monitor Performance .
4 Click Settings .
a Select the items that you want to monitor. You can monitor:
• RAID controller modules
•Virtual disks
• Storage array totals
NOTE: By default, all items are selected.
b In Polling interval , select how often you want to update the
performance statistics.
NOTE: For an accurate elapsed time, do not use the Set RAID Controller
Module Clocks option while using the Performance Monitor.
Each time the polling interval elapses, the Performance Monitor queries
the storage array again and updates the statistics in the table.
book.book Page 55 Monday, June 21, 2010 11:00 AM