2 performance monitor operations, Overview of performance monitor, Data collected by performance monitor – HP XP7 Storage User Manual
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2 Performance Monitor operations
This chapter describes performance monitoring and provides instructions for performing performance
monitoring operations using Performance Monitor.
Overview of Performance Monitor
Performance Monitor enables you to monitor your HP XP7 Storage system and collect detailed
usage and performance statistics. You can view the data in lists and on graphs to identify changes
in usage rates and workloads, analyze trends in disk I/O, and detect peak I/O times. For example,
if there is a decrease in performance, such as delayed host response times, you can use Performance
Monitor to discover the reason for the decrease and determine the actions to take to improve
performance.
Performance Monitor collects data about storage system resources such as drives, volumes, and
microprocessors as well as statistics about front-end (host I/O) and back-end (drive I/O) workloads.
You can perform both short-range and long-range monitoring. For long-range monitoring, data is
collected constantly. For short-range monitoring, you specify when and how often the data is
collected. Using the Performance Monitor data you can manage and fine-tune the performance of
your storage system using the performance management software products for the HP XP7 Storage
system.
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“Data collected by Performance Monitor” (page 9)
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“Short-range monitoring” (page 10)
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“Long-range monitoring” (page 10)
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“Performance Monitor data graphs” (page 11)
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“Export Tool for Performance Monitor” (page 11)
Data collected by Performance Monitor
Performance Monitor allows you to collect the following performance and usage statistics for the
HP XP7 Storage system. All statistics are available for short-range monitoring. The storage system
usage statistics are available for long-range monitoring. For details about the performance and
usage statistics, see
.
Data collected by Performance Monitor
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Back-end performance
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Usage rate of DRRs
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Usage rate of cache memory
Data drive usage statistics
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Data drive access rates
Write pending statistics
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Access path usage statistics
Business Copy/Business Copy Z usage statistics
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Remote I/O
Storage system throughput
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Data transfer rate
Pair synchronized
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Differential track
Response times
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Command response (CMR) delay time
Number of journals
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Data usage rate
Disconnected time
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Connected time
Meta data usage rate
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Detailed information of resources on top 20 usage rates
HTP port open exchanges
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Cache hit rates
Overview of Performance Monitor
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