HP StorageWorks XP Remote Web Console Software - Manual (Page 108)

Performance Monitor
The Performance Monitor software product provides detailed information on the I/O activity and
hardware performance of the storage systems. Performance Monitor can be used to monitor the
storage systems that will be (or already are) performing XP Continuous Access Journal operations.
The storage system usage and performance data collected and displayed by Performance Monitor
helps you to:
•
Identify the optimum timing to perform XP Continuous Access Journal data duplexing operations
(for example, during periods of light system I/O activity),
•
Determine the best locations for the XP Continuous Access Journal S-VOLs (for example, in
parity groups with less frequently accessed volumes to avoid bottlenecks of backend activity),
•
Monitor storage system performance during XP Continuous Access Journal operations and
during testing activities.
Performance Monitor data collection does not affect storage system operations in any way. However,
Performance Monitor data collection can cause a significant amount of traffic on the storage system
internal LAN, especially when Performance Monitor is collecting a large amount of LDEV data. To
prevent timeouts from occurring while you are performing XP Continuous Access Journal (or other)
operations on the Remote Web Console computer, you may want to decrease the Performance
Monitor data collection activities before using the Remote Web Console software. This reduces
storage system internal LAN traffic, so that inquiries and commands issued by the Remote Web
Console computer can be processed more quickly.
For further information on Performance Monitor, see the HP StorageWorks XP24000/XP20000
Performance Monitor User's Guide.
To perform XP Continuous Access Journal (or other) Remote Web Console operations while
Performance Monitor is collecting data for one or more storage systems on the same storage system
internal LAN:
1. If Performance Monitor is collecting a large amount of LDEV data, consider disabling
Performance Monitor LDEV data collection for one or more storage systems before using the
Remote Web Console software. See the HP StorageWorks XP24000/XP20000 Performance
Monitor User's Guide for instructions on disabling LDEV data collection.
2. If Performance Monitor is collecting data for more than three storage systems on the storage
system internal LAN, consider disconnecting Performance Monitor from one or more storage
systems before using the Remote Web Console software. See the HP StorageWorks
XP24000/XP20000 Performance Monitor User's Guide for instructions on disconnecting
Performance Monitor.
3. After you have disabled LDEV data collection and/or disconnected Performance Monitor, you
can connect to the storage system using the Remote Web Console software, launch XP
Continuous Access Journal, and perform XP Continuous Access operations (for example, create
pairs and view pair status).
4. When you are finished performing XP Continuous Access Journal operations, exit XP Continuous
Access Journal, and disconnect the Remote Web Console software from the storage system.
5. After you have disconnected the Remote Web Console computer from the storage system, you
can re-enable Performance Monitor data collection.
XP Auto LUN Software
Except when the pair status is COPY or PAIR, you can specify the XP Continuous Access Journal
primary or secondary volumes as the source volumes of XP Auto LUN.
Conversely, you cannot specify XP Continuous Access Journal data volumes and journal volumes
as the target volumes of XP Auto LUN. For further information on XP Auto LUN, see the HP
StorageWorks XP24000/XP20000 Auto LUN Software User Guide.
108 Preparing for XP Continuous Access Journal Operations