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

6. Set the desired threshold value:
To set a threshold to each prioritized port, locate the desired prioritized port, which is
indicated by Prio. in the Attribute column. Next, double-click the cell in the IOPS or
MB/s column in Threshold, and then enter the threshold value. In the list, either of
IOPS or MB/s column is activated depending on the rate selected at step 5 above.
Repeat this operation to set the thresholds for all prioritized ports. You can use different
types of rates (IOPS or MB/s) for thresholds of different prioritized ports.
CAUTION:
hyphen (-) and the threshold for the prioritized port becomes ineffective. If the thresholds
of all prioritized ports are ineffective, threshold control will not be performed but upper
limit control will be performed. If you set thresholds for multiple prioritized ports and the
I/O rate or transfer rate goes below the threshold at all prioritized ports, threshold control
works in the entire storage system and the upper limits of the non-prioritized ports are
disabled.
To set one threshold to the entire storage system, select the All Thresholds check box.
Next, select IOPS or MB/s from the list of right side in All Thresholds and enter the
threshold value in the text box. Even if the types of rates for upper limit values and the
threshold are different, the threshold control can work for all non-prioritized ports.
7. Click Apply to apply the settings to the storage system.
Related topics
"Performance Control workflow: one-to-one connections" (page 114)
"Performance Control window" (page 227)
"Port tab of the Performance Control main window" (page 228)

Implementing Performance Control: many-to-many connections

This section describes and provides instructions for implementing Performance Control for
many-to-many connections.
"Performance Control workflow: many-to-many connections" (page 119)
"Setting priority for WWNs: many-to-many connections" (page 120)
"Monitoring all port-HBA traffic: many-to-many connections" (page 122)
"Analyzing traffic statistics: many-to-many connections" (page 125)
"Setting upper-limit values for non-prioritized WWNs: many-to-many connections" (page 126)
"Setting a threshold for the entire storage system: many-to-many connections" (page 128)

Performance Control workflow: many-to-many connections

The workflow for using Performance Control depends on the connection between the host bus
adapters and the storage system ports. When many-to-many connections are established between
HBAs and storage system ports, the server priority cannot be defined by the port, because one
port can be connected to multiple adapters and multiple ports can be connected to one adapter.
For many-to-many connections, you can specify the priority of I/O operations and the upper limit
value for each host bus adapter, and you can specify one threshold value for the entire storage
system.
The WWN tab of the Performance Control main window is used to manage Performance Control
operations for many-to-many connections.
If you enter zero (0) in a cell to disable the upper limit, the cell displays a
Implementing Performance Control: many-to-many connections 119