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Response Time: This column indicates the time for replying from the port
or host bus adapter when I/O accesses are made from the host to them.
The unit is milliseconds. The average response time in the period specified
at Monitoring Term is displayed.
This column displays a hyphen (-) if the I/O rate is 0 (zero).
•
Attribute: Indicates the priority of each port. Prio. indicates a prioritized
port. Non-Prio. indicates a non-prioritized port.
Note: In the list of Port-LUN tab, two types of aliases appear for host bus
adapters: SPM name and nickname. If you select a port icon in the tree,
SPM names defined by Server Priority Manager appear. If you select a host
group icon in the tree, nicknames defined by LUN Manager appear. We
recommend that you specify the same name for an SPM name and a
nickname for convenience of host bus adapter management.
•
Initiator/External: Indicates the port attribute. Initiator indicates an
initiator port. External indicates an external port. Both of the ports are not
controlled by Server Priority Manager.
Viewing Details about the I/O and Transfer Rates
To view detailed information about the I/O rate or the transfer rate for a port:
1. From the list at the right side of the window, select the type of statistics to
be displayed.
– To view I/O rates, select IOPS (I/Os per second) from the list.
– To view transfer rates, select MB/s (megabytes per second) from the
list.
2. Select the Subsystem folder in the tree.
3. Select a port from the list.
4. Click Draw.
The graph that is not in detail is displayed.
5. Select the Detail check box
The graph contents change as described in Figure 4-10.
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Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Performance Monitor Operations
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