5-40
Performance
Monitor
Operations
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
•
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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