HPE XP7 User Manual page 101

completion, the Event Log screen displays records for the generated events. In case of performance
data collection failure, the Event Log screen displays the failure messages.
NOTE: If you plot performance graphs when the configuration data collection is in progress,
there would be gaps in the data points. These gaps might occur only a few times when the
configuration data collection is in progress and not throughout. They indicate that the
performance data is not collected when the configuration data collection is in progress.
• While creating a performance data collection schedule, you can select a command device that is
mapped through two different ports.
• While creating performance data collection schedules, you cannot split the components available in
the respective component type lists into two schedules. For example, if you create two performance
data collection schedules, the components that you select from the DKC, Port, and RG component
type lists for the first schedule cannot be included in the second schedule.
• In a multipathing environment, ensure that a command device is not exposed to a host from two
different ports. It stops the current performance data collection, as the schedule configured to obtain
the collection is automatically deleted.
• HPE recommends that you set the data collection rate to one hour or less because of management
station performance and field rollover. PA collects performance data on all LDEVs in the arrays that
communicate with the management station through their respective hosts. The hosts that display their
status as Received under the Host Information tab constitute the superset of the mapped LDEVs.
The performance data collection is not limited to the number of LDEVs that the host agent is mapped
to use. If you set the collection rate too narrow (less than 5 minutes), it results in reduced
responsiveness from the management station.
• If you are collecting the performance data for the first time, it takes longer than usual for PA to collect
the data. The subsequent performance data collection is as per the time specified in the Frequency
section.
• If you have performed a one-time configuration data collection and later the XP/XP7 disk array
configuration is modified, HPE recommends that you perform a fresh configuration data collection, so
that the performance data collected is for the latest configuration.
Collection Schedules 101