HP XP Array Manager Software - Manual (Page 11)

2 About XP Performance Control
This chapter gives an overview of XP Performance Control operations.
• Components
• Overview of Performance Control
• Interoperability with Other Products
Components
To use XP Performance Control, you need:
• The storage system
• Performance Monitor
• A WWW client computer connected to the storage system via LAN
To use XP Performance Control, you must use the WWW client computer to log on to the SVP. When
you are logged on, the XP Remote Web Console program, which is a Java application program, will
be downloaded to the WWW client computer. You can perform Performance Control operations in
the Remote Web Console window.
For details about requirements for WWW client computers, see HP StorageWorks XP24000/XP20000
Remote Web Console User’s Guide.
Cautions:
• If Performance Monitor is not enabled, you cannot use XP Auto LUN.
• Performance management operations (Performance Monitor and XP 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 XP Performance Control
When XP Performance Control is used, I/O operations from hosts requiring high performance are
given higher priority over I/O operations from other hosts.
• Performance of High-Priority Hosts
• Upper-Limit Control
Performance of High-Priority Hosts
In an SAN (storage area network) environment, the storage system is usually connected with multiple
host servers. Some types of the host servers often require high performance, which others might not
require such high performance.
For example, production servers usually require high performance. Production servers, which include
database servers and application servers, are used to perform daily tasks of business organizations.
If production servers suffer lowered performance, productivity in business activities is likely to be
XP24000/XP20000 Performance Control User's Guide 11