About performance monitoring, Checking the performance of remote copies, 271 checking the performance of remote copies – HP XP P9000 Command View Advanced Edition Software User Manual
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Replication Manager can also be used to monitor asynchronous remote copying performed using
Continuous Access Asynchronous or Continuous Access Journal. Write delay time or consistency time
delta (C/T delta) can be monitored to acquire transfer delay status from volume replication facilities.
You can display the transfer delay state between the primary and secondary volumes for each copy
group.
This module describes methods for monitoring performance of remote copies:
• About performance monitoring
• Checking the performance of remote copies
• Monitoring transfer delay state of remote copies
• Monitoring resource utilization (pools and journal groups)
About performance monitoring
TIP:
The information in this topic applies when system operation uses asynchronous remote copy
functionality, such as Continuous Access Asynchronous or Continuous Access Journal, or copy
functionality based on snapshot images, such as Snapshot.
For these types of system operation, you can check the following types of performance information
to find out if the target copy group is maintaining the predefined performance level:
You can check the usage of the following buffers:
•
When using Continuous Access Asynchronous: sidefiles, which are stored in cache
memory areas of the storage system to which the primary and secondary volumes belong
•
When using Continuous Access Journal: journal volumes that correspond to the primary
and secondary volumes
•
When using Snapshot in open systems: pool volumes for storing the differential data
used to create snapshot images (virtual volumes)
Buffer usage
You can check the time required to write data of the primary volume to the secondary volume
based on the write delay time.
Write delay
time (C/T
delta)
To view the workflow for checking the performance of remote copies, see “
If necessary, you can export the performance history to a CSV or HTML file, and then use that file
with another application program. Note that you can export only data whose retention period has
not expired.
Related topics
• About exporting management information
Checking the performance of remote copies
You can check the performance of remote copies when system operation uses asynchronous remote
copy functionality, such as Continuous Access Asynchronous or Continuous Access Journal, or copy
functionality based on snapshot images, such as Snapshot. In such cases, you can check the
performance information to find out if the target copy group is maintaining the predefined performance
level.
User Guide
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