Server Priority Manager Operation 6-11
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
Table 6-1 Relationship between the Thresholds of the Prioritized WWN
and the Upper Limits of the Non-prioritized WWN
Threshold
Settings
A Number Other Than Zero Is Set to
The Upper Limit of The Non-prioritized
WWN
Zero Is Set to The Upper Limit of The
Non-prioritized WWN
Threshold Is Set
to The Prioritized
WWN
When thresholds are set to multiple
prioritized WWNs, depending on the
transfer rate, the following controls
are executed.
If I/O rate or transfer rate exceeds the
threshold in any prioritized WWN,
upper limits of all the non-
prioritized WWNs take effect.
If I/O rate or transfer rate goes below
the threshold in any prioritized
WWN, upper limits of all the non-
prioritized WWNs do not take
effect.
The threshold control of the prioritized
WWN is not executed.
Threshold Is Not
Set to The
Prioritized WWN
The specified upper limit always takes
effect.
Starting Server Priority Manager
To start Server Priority Manager, take the following steps.
To start Server Priority Manager:
1. Ensure that the Storage Navigator main window is in Modify mode (i.e.,
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. Verify whether the background color of the lock icon
is blue.
If the background color is red
, you will not be able to switch from
View mode to Modify mode. Wait for a while and click the
button.
When the background color turns blue, you can go to the next step.
b. Select the
(pen tip) icon.
A prompt asks whether you want to change the mode.
c. Select 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
Performance Management window.
3. Ensure that the Real Time option is cleared.
You cannot start Server Priority Manager in real-time mode.
