HP XP Array Manager Software User Manual
Page 24
Description
Item
•
The Ave. column is also displayed when you select an icon in the lower-left tree. In this case,
the Ave. column shows the average value, which is the same as WWN Total.
When you select the Subsystem folder in the lower-left tree, the Ave. column shows the sum
of the traffic of the HBAs registered on each Performance Control group.
•
The Max. column is also displayed when you select an icon in the lower-left tree. In this case,
the Max. column shows the maximum value which is the same as WWN Total.
When you select the Subsystem folder in the lower-left tree, the Max. column shows the sum
of the traffic of the HBAs registered on each Performance Control group.
•
The Attribute column indicates the priority of each WWN. Prio. indicates a prioritized WWN.
Non-Prio. indicates a non-prioritized WWN. For details on how to change the priority, see
“
Setting Priority for Host Bus Adapters
If one HBA connects to multiple ports, the attribute setting of the HBA is common to all the
ports. Therefore, if you specify a HBA as a prioritized WWN or a non-prioritized WWN for
one port, that setting is applied to all the other connected ports automatically.
•
The Upper columns let you specify the upper-limit on the I/O rate and the transfer rate for
each HBA. Either the IOPS or the MB/s column in the list is activated depending on the selection
from the list above.
The IOPS column lets you specify the upper-limit for I/O rates. The MB/s column lets you
specify the upper-limit for transfer rates. To specify an upper-limit, double-click a cell to display
the cursor in the cell.
If you specify a value in either the IOPS or the MB/s column, the other column is deactivated.
You can specify upper-limit values for I/O rates and transfer rates all together for different
non-prioritized WWNs.
Notes:
• If one HBA connects to multiple ports, the setting of the upper-limit value for a non-prioritized
WWN is common to all the ports. Therefore, if you specify an upper-limit value of non-
prioritized WWN for one port, that setting is applied to all the other connected ports
automatically.
• You cannot change the upper-limit value of a HBA that has registered on a Performance
Control group. The upper-limit value of such a HBA is defined by the setting of the Perform-
ance Control group to which the HBA is registered. For details on setting the upper-limit
value of a Performance Control group, see “
Setting an Upper-Limit Value to HBAs in a
• The Upper columns will not appear if a Performance Control group ( ) or a HBA ( )
is selected in the lower-left tree.
If you select this check box and enter a threshold value in the text box, the threshold value will
be applied to the entire storage system. To specify the threshold for the I/O rate, select IOPS
from the list on the right of the text box. To specify the threshold for the transfer rate, select MB/s
from the list. For example, if you specify 128 IOPS in All Thresholds, the upper limits on
non-prioritized WWNs are disabled when the sum of I/O rates for all the prioritized WWNs is
below 128 IOPS.
Even if you use a different type of rate (IOPS or MB/s) for the threshold from that used for the
upper limit values of the non-prioritized WWNs, the threshold control can work for all the WWNs.
In the WWN tab, you cannot specify individual thresholds for each host bus adapter.
All
Thresholds
Performance Control Windows
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