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Port Tab Operations
If one-to-one connections are established between host bus adapters (HBAs)
and storage system ports, use the Port tab in the Server Priority Manager
window to do the following:
•
Analyze traffic statistics
•
Measure traffic between host bus adapters and storage system ports
•
Set priority to ports on the storage system
•
Set an upper limit to traffic at each non-prioritized port
•
Set a threshold to the storage system or to each prioritized port, if
necessary
If one-to-one connections are established between host bus adapters and
ports, you should specify the priority of I/O operations on each port. You can
specify the upper limit values on the non-prioritized ports, and if necessary,
you can also specify the threshold values on the prioritized ports. Moreover,
you can use one threshold value applied for the entire storage system.
For details on the system configuration of one-to-one connections between
host bus adapters and ports, see If One-to-One Connections Link HBAs and
Ports. This section explains operation procedures you can perform for ports
and the entire storage system.
Analyzing Traffic Statistics
The traffic statistics reveal the number of I/Os that have been made via ports.
The traffic statistics also reveal the amount of data that have been transferred
via ports. You must analyze the traffic statistics to determine upper limit
values that should be applied to I/O rates or transfer rates for non-prioritized
ports.
The following is the procedure for using the Server Priority Manager window
to analyze traffic statistics. You can also use the Performance Management
window to analyze traffic statistics. Performance Monitor can display a line
graph that indicates changes in traffic (For details, see Viewing I/O Rates for
Ports and Viewing Transfer Rates for Ports).
To analyze traffic statistics:
1. Start Server Priority Manager.
The Server Priority Manager window is displayed.
2. Select the Port tab.
3. Select All from the list at the top right corner of the window.
4. Do one of the following:
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Server Priority Manager Operation
6-13
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