HP Storage Essentials V5.1 User Guide First Edition (T4283-96026, August 2006)

Storage Essentials 5.1 User Guide 217
interface or the performance of the product. For example, assume you added the site “remotesiteA”
for global reporting. It would appear in the tnsnames.ora file as the following:
remotesiteA =
(DESCRIPTION =
(ADDRESS_LIST =
(ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.1.2)(PORT = 1521))
)
(CONNECT_DATA =
(SID = appiq)
)
)
Now, let's assume you removed “remotesiteA” from the user interface by clicking the
corresponding button for the site and then the Refresh Now button near the bottom of the
Global Reporter page (Reports > Storage Essentials > Report Configuration in HP Systems
Insight Manager). Even though the remote site has been removed from the user interface, it still
appears in the tnsnames.ora file. If you add “remotesiteA” as a remote site for global reporting
again, another listing will be added to the tnsnames.ora file. These duel listings do not
negatively impact the product.
Managing Performance Collection
This section describes the following:
• ”Managing Performance Collectors” on page 217
• ”Starting Performance Collectors” on page 219
• ”Stopping Performance Collectors” on page 219
• ”Setting the Date and Time for Performance Collectors” on page 219
• ”Viewing Data Aging Statistics for Performance” on page 220
Managing Performance Collectors
The management server uses performance collectors to gather information for Capacity Manager
and Performance Manager charts, as well as for monitoring. Use Data Collection page for
Performance collectors to stop and start collectors as well as schedule when they run. Each row in
the table corresponds to a collector. The Element Type column displays which element the collector
gathers data for, and the Statistics column displays which statistics for that element the collector is
tasked to gather.
For example, assume you see host_A in the Element Type column and Processor Utilization in the
Statistics column. That collector gathers data about processor utilization for host_A.
You can have multiple collectors for an element. Let's go back to the example of host_A. Assume
this host has another collector. Underneath the first row there is anther row for the second collector.
The Element Type is host_A, but this time the following statistics are listed: Physical Memory Used,
Free Physical Memory, Virtual Memory Used, Free Virtual Memory. The second collector gathers
information about all of those statistics listed for host_A.