Server Priority Manager workflow: one-to-one connections
The workflow for Server Priority Manager 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 Server Priority Manager main window is used to manage Server Priority Manager operations for one-to-one connections.
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If desired, assign names to the WWNs for ease of identification. For details, see Changing the SPM name of a host bus adapter.
- Set the priority (Prio or Non-Prio) for the ports of the storage system. For details, see Setting priority for ports: one-to-one connections.
- Monitor the I/O traffic at the prioritized and non-prioritized ports to collect data and statistics for analysis. For details, see Monitoring WWNs.
- Analyze the traffic statistics that you have collected to determine the appropriate upper limits to set for the non-prioritized ports. For details, see Analyzing traffic statistics: one-to-one connections.
- Set upper limits for I/O traffic at the non-prioritized ports to prevent these ports from affecting the prioritized ports. For details, see Setting upper-limit values for non-prioritized ports: one-to-one connections.
- Monitor the I/O traffic at the ports again to check the results of applying the upper limits to the non-prioritized ports, and adjust the upper-limit values as needed.
- If desired, apply a threshold to the ports or to the entire storage system to allow higher performance at non-prioritized ports when activity on the prioritized ports or storage system is low. For details, see Setting a threshold: one-to-one connections.