HP StorageWorks Performance Advisor XP Software user guide (T1789-96025, October 2007)

If you are collecting performance data for the firsttimeonthearray,ittakeslongerthanusualfor
PA XP to get the data. Subsequent performance data collection on the array is a s per the time
specified in the Frequency text box.
NOTE:
To ensure optimal performance and results, the maximum number of LDEVs for data
collection is 6000. This is the total number of LDE V s across all arrays that are visible to a
particular host agent. You c an decrease the total number of LDEVs visible to a h ost agent,
by restricting the LDEVs that visible to the host. You c an increase the maximum number
of LDEVs visible to a host agent, by increasing the number of LDEVs that are visible to
the host. For information on increasing the number of LDEVs that are visible to the Host
Agent, see For the management station.
Stopping performance data collection
The Data Collection Configuration screen allows you to specify whether or not you want to collect
performance data. To stop collecting performance data on a command device, complete the following
steps:
1. Select a row in the list box to highlight the command device(s) that you want to stop collecting
data on.
2. Select Collect Performance Data.
3. Select Stop Data Collection.
4. Click Submit. Performance data collection on the command device stops.
Increasin g the maximum number of LDEVs
To ensure optimal performance and results, the maximum number of LDEVs fo r data collection is restricted
to 6000. To increase the maximum number of LDEVs to 16000, incre ase the amount of memory given
to the JVM when you start the host agent and manag ement station services. You can do this for the
management station and the host station.
For the management station
To increase the maximum num ber of LDEVs for the mana gem ent station, complete the following steps:
1. Open the file: HPSS\pa\tomcat\conf\wrapper.properties
2. Editthelastlineofthefollowingfile from:
wrapper.cmd_line=$(wrapper.javabin) -Dhpss.home.dir= $(hpss_home)
-Xmx384m -Xrs -classpath $(wrapper.class_path)$(wrapper.startup_class)
-config $(wrapper.server_xml -home $(wrapper.tomcat_home)
to
wrapper.cmd_line=$(wrapper.javabin) -Dhpss.home.dir= $(hpss_home)
-Xms256M -Xmx512M -Xrs -classpath $(wrapper.class_path)
$(wrapper.startup_class) -config $(wrapper.server_xml -home
$(wrapper.tomcat_home)
For the host agent on U NIX/Linux hosts
To increase the maximum number of LDEVs for the host agent on a UNIX or Linux host, complete the
following steps:
1. Open the file: /opt/sanmgr/hostagent/sbin/HA_trigger
2. Edit the following line from:
HP StorageWorks Performance Advisor XP Software user guide
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