6-30
Server Priority Manager Operation
Hitachi Universal Storage Platform V/VM Hitachi Performance Manager User’s Guide
–
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 ( ), take the following steps:
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
.
