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– To switch priority from non-prioritized to prioritized, select Non-Prio -
>> Prio from the pop-up menu.
5. Click Apply.
The settings in the window are applied to the storage system.
Setting an Upper-Limit Value to HBAs in an SPM Group
If all the host bus adapters in an SPM group are non-prioritized WWNs (i.e.
low-priority HBAs), you can set an upper limit value to HBA performance (i.e.
I/O rate or transfer rate). You can assign one upper limit value for one SPM
group.
For example, suppose that the upper limit value 100 IOPS is assigned to an
SPM group consisting of four host bus adapters. If the sum of the I/O rate of
the four HBAs reaches 100 IOPS, Server Priority Manager controls the system
so that the sum of the I/O rates will not exceed 100 IOPS.
To set an upper limit value to HBAs in an SPM group:
1. Start Server Priority Manager.
The Server Priority Manager window is displayed.
2. Select the WWN tab.
3. In the lower-left tree, select and right-click the Subsystem folder or an SPM
group (
4. If you selected the Subsystem folder, take the following steps:
a. Select IOPS or MB/s from the list at the upper-left corner of the list.
Select IOPS if you want to assign an upper limit to the I/O rate. Select
MB/s if you want to assign an upper limit to the transfer rate.
b. To assign an upper limit to the I/O rate, enter the upper limit value in
the IOPS column of the list.
To assign an upper limit to the transfer rate, enter the upper limit value
in the MB/s column of the list.
Tips: If you cannot see the IOPS or MB/s column, scroll the list to the
left. The column is located at the right side of the list.
If you selected an SPM group (
a. Right-click the selected SPM group and then select Change Upper
Limit from the pop-up menu.
The Change Upper Limit window is displayed.
b. To assign an upper limit to the I/O rate, enter the upper limit value and
then select IOPS from the list. Next, select OK.
To assign an upper limit to the transfer rate, enter the upper limit value
and then select MB/s from the list. Next, select OK.
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Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User's Guide
).
Server Priority Manager Operation
), take the following steps:
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