HP XP P9500 Storage - Manual (Page 76)

Table 5 Remote copy I/O statistics data (continued)
Description Data type
Initial Copy
The initial copy hit rate. The unit is percent. Initial Copy Hit Rate
The average transfer rate for initial copy operations. The unit is kilobytes
per second. Average Transfer Rate
Asynchronous Copy
The number of asynchronous remote I/Os per second at the primary system. M-JNL Asynchronous RIO count
The number of journals at the primary system. M-JNL Total Number of Journal
The average transfer rate for journals in the primary system. The unit is
kilobytes per second. M-JNL Average Transfer Rate
The remote I/O process time on the primary system. The unit is milliseconds. M-JNL Average RIO Response
The number of asynchronous remote I/Os per second at the secondary
system. R-JNL Asynchronous RIO count
The number of journals at the secondary system. R-JNL Total Number of Journal
The average transfer rate for journals in the secondary system. The unit is
kilobytes per second. R-JNL Average Transfer Rate
The remote I/O process time on the secondary system. The unit is
milliseconds. R-JNL Average RIO Response
M-JNL
Data usage rate for master journals. The unit is percent. Data Used Rate
Metadata usage rate for master journals. The unit is percent. Meta Data Used Rate
R-JNL
Data usage rate for restore journals. The unit is percent. Data Used Rate
Metadata usage rate for restore journals. The unit is percent. Meta Data Used Rate
Manipulating graph, save data
•
To enlarge the graph, right-click it and select Large Size.
•
To close the graph, right-click it and select Close.
•
To save monitoring data in text files, use the Performance Monitor Export Tool.
Monitoring I/O and hardware performance with Performance Monitor
Performance Monitor software provides detailed information on I/O activity and hardware
performance in the P9500 systems. Storage system usage and performance data that is collected
and displayed by Performance Monitor enables you to:
•
Identify the optimum timing for performing Continuous Access Journal copy operations.
•
Determine the best locations for the Continuous Access Journal S-VOLs (for example; parity
groups with less frequently accessed volumes to avoid bottlenecks of back-end activity)
•
Monitor system performance during Continuous Access Journal operations and during testing
activities.
Use the following procedure to lessen the impact on Continuous Access Journal operations while
Performance Monitor is collecting data for one or more systems on the same P9500 internal LAN:
76 Monitoring the system