HP XP Array Manager Software - Manual (Page 244)

3. Click the link for a host to access additional details.
4. Continue to view more details by clicking the links on subsequent views.
Related topics
• About the Hosts tree , page 243
Analyzing Continuous Access Journal performance
This module describes procedures for analyzing Continuous Access Journal performance to identify
potential problems.
About analyzing Continuous Access Journal performance
The Replication tab provides information for analyzing performance problems with data transfers
between the primary and secondary storage systems.
Continuous Access Journal (Cnt Ac-J) asynchronously transfers data to the remote site. Delay times
occur and differ depending on the data transfer timing. This delay is known as
C/T delta and is
an indicator for Recovery Point Objective (RPO).
You can use the Replication tab to:
• Identify instances where the C/T delta threshold was exceeded.
View the top five copy groups and their C/T delta rates in a chart. You can quickly identify copy
groups that consistently exceed the maximum write time delay (C/T delta threshold).
• Analyze the C/T delta threshold against the performance of primary, secondary, and network
resources. The analysis process supports two modes:
• Wizard mode: a step-by-step guide that compares trends and helps users identify the cause of
the problem.
• Advanced mode: a selection of charts that lets advanced users correlate multiple trends and
identify the problematic resource.
Prerequisites for analyzing Continuous Access Journal performance
Before attempting analysis, verify the site configuration, necessary software, and user access controls.
You must satisfy the following requirements before using the Replication tab:
• Ensure that your site configuration meets all the configuration requirements for Continuous Access
Journal performance analysis described in the HP XP7 Command View Advanced Edition Admin-
istrator Guide.
• Ensure that HP XP7 Performance Advisor and Replication Manager are installed and linked to XP7
Command View AE.
• Ensure that users have the necessary permissions (roles and resource access) for the Replication
tab described in “
Required roles and resource groups by function ” on page 78.
NOTE:
The performance analysis function supports copy groups consisting of open volumes. Copy groups
that are defined by device group, use multiple journal groups in a Continuous Access Journal MxN
configuration, or use virtual command devices, are not supported.
Monitoring managed resources and resolving alerts 244