HP XP Array Manager Software - Manual (Page 15)

2 About Performance Monitor
Components
To use Performance Monitor, you need:
• the storage system
• the Performance Monitor program products (Performance Monitor is required. Auto LUN is
optional)
• a WWW client computer connected to the storage system via LAN
To use Performance Monitor, you must use the WWW client computer to log on to the SVP. When you
are logged on, the HP StorageWorks XP Remote Web Console program, which is a Java application
program, will be downloaded to the WWW client computer. You can perform Performance Monitor
operations in the Remote Web Console window.
For details about requirements for WWW client computers, see HP StorageWorks XP24000 Remote
Web Console User’s Guide.
Cautions:
• If Performance Monitor is not enabled, you cannot use Auto LUN.
• Performance management operations (Performance Monitor and Auto LUN) involve the collection
of large amounts of monitoring data. This requires considerable web client computer memory. It
is therefore recommended that you exit the Remote Web Console program when not conducting
performance management operations, to release system memory.
Overview of Performance Monitor
Performance Monitor tracks your storage system and lets you obtain statistics about the following:
• resources in your storage system
• workloads on disk and ports
If your system encounters some problem (for example, if server hosts suffer delayed response times),
Performance Monitor can help you detect the cause of the problem.
Note:
• An Export Tool enables you to save information on the Auto LUN window into files, so you can
use spreadsheet or database software to analyze the monitoring results. For detailed information
about the Export Tool, see “ Overview of Export Tool ” on page 22.
• Performance Monitor can also display the status of remote copies by HP StorageWorks XP
Continuous Access Software, TrueCopy for Mainframe, HP StorageWorks XP Continuous Access
Journal Software, and Universal Replicator for Mainframe. The displayed contents are the same
as those displayed in the Usage Monitor windows of each remote copy function.
Understanding Statistical Storage Ranges
Performance Monitor has two kinds of periods (ranges) for collecting and storing statistics: short range
and long range. The difference of the two ranges and the statistics at which they are targeted is as follows:
• Storing in short range
If the number of CUs to be monitored is 64 or less, Performance Monitor collects statistics at a
user-specified interval that is between 1 and 15 .
If the number of the CUs to be monitored is 65 or more, Performance Monitor collects statistics at
a user-specified interval that is 5, 10 or 15 minutes, and stores them between 8 hours and 1 day.
XP24000 Performance Monitor User's Guide 15