Table of Contents
Advertisement
If you change settings of a port, that port remains in the list regardless of
the selection in the list.
•
The list near the upper left corner of the Port tab allows you to change the
type of performance statistics to be displayed in the list.
– If IOPS (I/Os per second) is selected, the list displays I/O rates for
ports. The I/O rate indicates the number of I/Os per second.
– If MB/s (megabytes per second) is selected, the list displays the
transfer rates for ports. The transfer rate indicates the size of data
transferred via a port in one second.
•
The list displays a list of ports and indicates the I/O rate or the transfer
rate for each port. This list also enables you to specify the port attributes,
and the threshold and upper limit of the port traffic.
The measurement unit for the values in the list can be specified by the list
above the trees. The port traffic (I/O rate and transfer rate) is monitored
by Performance Monitor. To specify the monitoring period, use the
Monitoring Term area of Performance Monitor.
The list shows the following items:
– The Port column indicates ports on the storage system.
– The Ave. column indicates the average I/O rate or the average transfer
rate for the specified period.
– The Peak column indicates the peak I/O rate or the peak transfer rate
of the ports for the specified period. This value means the top of the
Max. line in the detailed port-traffic graph drawn in the Port-LUN tab of
Performance Monitor. For details, see Viewing I/O Rates for Disks and
Viewing Transfer Rates for Disks.
– The Attribute column indicates the priority of each port. Prio indicates
a prioritized port. Non-Prio indicates a non-prioritized port.
– The Threshold columns let you specify the threshold for the I/O rate
and the transfer rate for each prioritized port. Either the IOPS or MB/s
column in the list is activated depending on the selection from the list
above.
The IOPS column lets you specify the threshold for I/O rates. The
MB/s column lets you specify the threshold for transfer rates. To
specify a threshold, double-click a cell to display the cursor in the cell.
If you specify a value in either of the IOPS or MB/s column, the other
column is deactivated. You can specify thresholds for I/O rates and
transfer rates all together for different prioritized ports.
Even if you use the different type of rate for the threshold as that used
for the upper limit values, the threshold control can work for all the
ports.
– The Upper columns let you specify the upper limit on the I/O rate and
the transfer rate for each non-prioritized port. Either the IOPS or MB/s
column in the list is activated depending on the selection from the list
above.
4-32
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Using the Performance Manager GUI
Advertisement
Table of Contents
