Starting xp performance control – HP XP Array Manager Software User Manual
Page 32
shows the relationship between the thresholds and the upper limits:
Table 1 Relationship between the thresholds of the prioritized WWN and the upper limits of the
non-prioritized WWN
Zero Is Set as the upper-
limit of the Non-priorit-
ized WWN
A Number Other Than Zero Is Set as the upper-limit
of the Non-prioritized WWN
Threshold Set-
tings
The threshold control of the
prioritized WWN is not ex-
ecuted.
When thresholds are set to prioritized WWNs, depending
on the I/O rate or the transfer rate, the following controls
are executed.
•
If the total value of I/O rate or transfer rate exceeds the
threshold in all prioritized WWNs, upper limits of all
the non prioritized WWNs take effect.
•
If the total value of I/O rate or transfer rate goes below
the threshold in all prioritized WWNs, upper limits of
all the non prioritized WWNs do not take effect.
Threshold Is set to
the Prioritized
WWN
The specified upper-limit always takes effect.
Threshold Is not
set to the priorit-
ized WWN
Starting XP Performance Control
To start XP Performance Control, take the following steps.
To start XP Performance Control:
1.
Ensure that the Remote Web Console main window is in Modify mode (that is, with the background
color of the pen tip icon
showing light yellow). If the background color is gray , the window
is in View mode, and you must change it to Modify mode by taking the following steps:
a.
Check whether the background color of the lock icon
is blue.
If the background color is red
, you cannot switch from View mode to Modify mode. Click
the
button. When the background color turns blue, you can go to the next step.
b.
Click the
(pen tip) icon.
A prompt asks if you want to change the mode.
c.
Click OK to close the message.
The background color of the icon changes to light yellow (
). The mode changes to Modify
mode. The background color of the lock icon becomes red (
).
2.
Ensure that the WWN tab or the Port-LUN tab is active in the XP Auto LUN window.
3.
Ensure that the Real Time option is cleared.
You cannot start XP Performance Control in real-time mode.
4.
Click Performance Control (PFC).
The Performance Control window is displayed.
• Use the Port tab (
on page 18) if a one-to-one connection is established between
HBAs and storage system ports. For details on operations in the Port tab, see “
XP Performance Control Operations
32