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5. Below the Subsystem folder in the upper-left tree, click the icon of the
port whose traffic statistics you want to collect.
The list displays traffic statistics (I/O rates or transfer rates) about the host
bus adapters that connect to the selected port.
The following two types of traffic are shown. The traffic has attributes
including the average and maximum values.
– Traffic between the host bus adapter and the selected port (shown in
Per Port)
– Sum of the traffic between the host bus adapter and all the ports
connected to the host bus adapter (shown in WWN Total)
Notes:
The traffic statistics only about the host bus adapters below Monitor
appear in the list.
The WWN Total traffic statistics will also be displayed in the list when you
click an icon in the lower-left tree. If you click the Subsystem folder in
the lower-left tree, the sum of the traffic of the host bus adapters
registered on each SPM group is displayed. For details on SPM groups,
see Grouping Host Bus Adapters.
6. Analyze the information in the list and then determine upper limit values
that should be applied to non-prioritized WWNs. If necessary, determine
threshold values that should be applied to prioritized WWNs. For details,
see If Many-to-Many Connections Link HBAs and Ports.
Setting Priority for Host Bus Adapters
If many-to-many connection is established between host bus adapters (HBAs)
and ports, you need to define the priority of WWNs, measure traffic between
each HBA and the port that the HBA is connected to, and analyze the traffics.
The host bus adapters (HBAs) are divided into two types: Prioritized WWNs
and non-prioritized WWNs. Prioritized WWNs are the host bus adapters that
are used for the high-priority processing, and non-prioritized WWNs are the
host bus adapters that are used for the low-priority processing. Specify a host
bus adapter existed in a server, on which the high-priority processing is
performed, as a prioritized WWNs. Specify a host bus adapter existed in a
server, on which the low-priority processing is performed, as a non-prioritized
WWNs.
To set priority to host bus adapters:
1. Start Server Priority Manager.
The Server Priority Manager window is displayed.
2. Select the WWN tab.
3. Select All from the list at the top right corner of the window.
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Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Server Priority Manager Operation
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