Viewing details about the i/o and transfer rates, Monitoring lu paths, Monitoring lu – HP XP Array Manager Software User Manual
Page 88: Paths
•
Nickname: Nickname for the host bus adapters. Use LUN Manager to assign a nickname to each
host bus adapter so that you can easily identify each host bus adapter in the LUN Manager win-
dows.
•
Current: Current transfer rate.
•
Ave.: Average transfer rate for the specified period.
•
Peak: Peak transfer rate of the ports for the specified period. This value is shown in the list when
you select the Subsystem folder in the tree.
If you select a port in the list, click Draw, and select the Detail check box, the detailed graph of
the port transfer rate is drawn. The Peak value means the top of the Max. line in this graph.
•
Max.: Maximum transfer rate for the specified period. This value is shown in the list when you
select a port icon or host group icon in the tree.
•
Response Time: 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
for Monitoring Term is displayed.
This column displays a hyphen (-) if the I/O rate is 0 (zero).
•
Attribute: 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: XP Performance Control
name and nickname. If you select a port icon in the tree, XP Performance Control names defined by
XP Performance Control appear. If you select a host group icon in the tree, nicknames defined by
LUN Manager appear. HP recommends that you specify the same name for an XP Performance
Control name and a nickname for convenience of host bus adapter management.
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
Monitoring LU Paths
Performance Monitor monitors LU paths and measures I/O rates (that is, the number of I/Os per
second) and transfer rates (that is, the size of data transferred per second). This section describes
how to view I/O rates and transfer rates of LU paths on the storage system. Before taking the following
steps, you need to start monitoring in accordance with the procedure described in “
Stopping Storage System Monitoring
” on page 60 and obtain the usage statistics.
Performance Monitor Operations
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