HP XP Array Manager Software - Manual (Page 38)

• To use the transfer rates for the threshold value, click MB/s.
NOTE:
To set one threshold value for the entire storage system, this step is unnecessary.
4. Do one of the following:
• To specify a threshold for each prioritized port, locate the desired prioritized port, which is
indicated by Prio. in the Attribute column. Next, double-click the cell in the IOPS or MB/s
column in Threshold, and then enter the threshold value. In the list, either of the IOPS or the
MB/s column is activated depending on the rate selected at step
3 on page 37 above. Repeat
this operation to set the thresholds for all the prioritized ports. You can use different types of
rates (IOPS or MB/s) for thresholds of different prioritized ports.
Table 2 Relationship between the thresholds of the prioritized port and the upper limits of the
non-prioritized port
Zero Is Set to the upper-
limit of the Non-priorit-
ized Port A Number Other Then Zero Is Set to the upper-
limit Limit of the Non-prioritized Port
The threshold control of
the prioritized port is not
executed.
When thresholds are set for multiple prioritized ports,
depending on the transfer rate, for following controls
are executed.
• If I/O rate or transfer rate exceeds the threshold
in any prioritized port, upper limits of all the non-
prioritized ports take effect.
• If I/O rate or transfer rate goes below the
threshold in any prioritized port, upper limits of
all the non-prioritized ports do not take effect.
Threshold is set for
the prioritized port
Threshold is not set
for the prioritized
port
• To set one threshold to the entire storage system, select the All Thresholds check box. Next,
select IOPS or MB/s from the list in All Thresholds and enter the threshold value in the text
box. Even if the types of rates for upper-limit values and the threshold are different, the threshold
control can work for all the non-prioritized ports.
5. Click Apply.
The settings in the window are applied to the storage system.
WWN Tab Operations
If many-to-many connections are established between HBAs and storage system ports, you use the
WWN tab in the Performance Control window to do the following:
• Monitoring All Traffic between HBAs and Ports .
• Analyzing Traffic Statistics
• Setting Priority for Host Bus Adapters
• Setting Upper-Limit Values for Non-Prioritized WWNs
• Setting a Threshold
XP Performance Control Operations 38