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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 of the IOPS or 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 ports.
•
If you select the All Thresholds check box and enter a threshold value in
the text box, the threshold value will be applied to the entire storage
system. If you want to specify the threshold for the I/O rate, select IOPS
from the list on the right of the text box. If you want 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 ports are disabled when the sum of I/O rates for all the
prioritized ports is below 128 IOPS.
Even if you use the different type of rate (IOPS or MB/s) for the threshold
as that used for the upper limit values, the threshold control can work for
all the ports.
•
If you check the Delete ports if CHA is removed check box, Server
Priority Manager will delete, from SVP, the setting information of Server
Priority Manager on ports in channel adapters that have been removed.
When a channel adapter is removed, the port and its settings are removed
from the Server Priority Manager window automatically, but they remain
in SVP. This may cause that the old setting for Server Priority Manager to
be applied to a different channel adapter than the one newly-installed on
the same location.
The Delete ports if CHA is removed check box is available only when the
following Server Priority Manager settings on ports in a removed channel
adapter remains on SVP:
– The setting of prioritized ports or non-prioritized ports.
– The setting of prioritized WWNs or non-prioritized WWNs.
•
The Apply button applies the settings in this window to the storage
system.
•
The Reset button restores the last applied settings in the window. When
you click this button, all the changes displayed with the blue text in the
window are canceled.
•
The Initialize button changes the settings in this window as explained
below, and then applies the resulting settings to the storage system:
– All the ports become prioritized ports.
– The threshold value for all the ports becomes 0 (zero).
The window will display a hyphen (-) instead of 0 (zero).
– If the All Thresholds checkbox is checked, the check mark disappears.
•
The Close button closes the Server Priority Manager window.
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
Using the Performance Manager GUI
4-33
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