Implementing Performance Control: One-To-One Connections; Performance Control Workflow: One-To-One Connections - HPE XP7 User Manual

on both tabs, the settings cannot be applied at the same time. When you select Apply, the
settings on the last tab on which you made settings are applied, and the settings on the
other tab are discarded.
Using RAID Manager
Do not perform Performance Control operations from RAID Manager and the GUI at the
same time. If you change some settings for Performance Control from RAID Manager, you
cannot change those settings from the GUI. If you do, some settings might not appear.
Before you change features that use Performance Control, delete all Performance Control
settings from the currently used features.
Connecting one HBA to multiple ports
If one host bus adapter is connected to multiple ports and you specify an upper limit of the
non-prioritized WWN for one port, the specified upper limit value will be applied to the host
bus adapter settings for other connected ports automatically.
Setting the connection between host bus adapter and port
To make setting for connecting the host bus adapter's WWN and the port, use the WWN
tab of the Performance Control main window. Alternatively you can use the Monitored WWNs
tab of the Performance Monitor main window. Note that the monitored WWN name displayed
in Performance Monitor is displayed as the Perf Ctl name in Performance Control.

Implementing Performance Control: one-to-one connections

This section describes and provides instructions for implementing Performance Control for
one-to-one connections.
"Performance Control workflow: one-to-one connections" (page 114)
"Setting priority for ports: one-to-one connections" (page 115)
"Analyzing traffic statistics: one-to-one connections" (page 116)
"Setting upper-limit values for non-prioritized ports: one-to-one connections" (page 117)
"Setting a threshold: one-to-one connections" (page 118)

Performance Control workflow: one-to-one connections

The workflow for Performance Control depends on the connection between the host bus adapters
and the ports. When one-to-one connections are established between host bus adapters and
ports, you can manage the priority of I/O operations on each port. You can specify upper limit
values on the non-prioritized ports. You can also specify threshold values on the prioritized ports
or apply one threshold value to the entire storage system. When traffic drops below this threshold,
the upper limits on non-prioritized ports are disabled to allow higher performance on non-prioritized
ports during periods of low system activity.
The Port tab of the Performance Control main window is used to manage Performance Control
operations for one-to-one connections.
Workflow for one-to-one connections:
1. If desired, assign names to the WWNs for ease of identification. For details, see
the PFC name of a host bus adapter" (page
2. Set the priority (Prio or Non-Prio) for the ports of the storage system. For details, see
priority for ports: one-to-one connections" (page
3. Monitor the I/O traffic at the prioritized and non-prioritized ports to collect data and statistics
for analysis. For details, see
114 Performance Control operations
129).
115).
"Monitoring WWNs" (page 15).
"Changing
"Setting