Huawei OceanStor VIS6000 series Initial Configuration Manual page 210

5 Configuring the Mirror Function
Context
Round According to this policy, plexes in the volume satisfy read requests to the volume in
l
turn. This policy is suitable for a volume in which all plexes are of the similar performance.
This policy can utilize load balancing, thus effectively enhancing the read performance of
the volume.
Select According to this policy, the system automatically chooses the suitable policy. For
l
example, when the volume only has one associated plex, the system chooses prefer. In most
other cases, the system usually chooses round.
Prefer According to this policy, the plex with higher performance satisfies read requests
l
first. If the plex is faulty, the other plex is accessed. If one of the two plexes has rather low
performance, you are recommended to choose this policy to avoid degradation on the system
performance.
Procedure
Step 1 In the navigation tree, click the Logical tab.
Step 2 In the navigation tree, select the Volume node.
Step 3 Select the mirror volume whose read policy is to be modified.
Step 4 Select a suitable read policy
Round
1.
2.
3.
4.
Select
1.
2.
3.
4.
Prefer
1.
5-6
CAUTION
On the menu bar, choose Configuration > Mirror > Modify Mirror Policy > Round ...
> .
The Warning dialog box is displayed.
Enter yes (case insensitive).
Click OK.
The Info dialog box is displayed, stating "Operation succeeded."
Click OK.
On the menu bar, choose Configuration > Mirror > Modify Mirror Policy > Select ...
> .
The Warning dialog box is displayed.
Enter yes (case insensitive).
Click OK.
The Info dialog box is displayed, stating "Operation succeeded."
Click OK.
On the menu bar, choose Configuration > Mirror > Modify Mirror Policy > Prefer...
> .
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Copyright © Huawei Technologies Co., Ltd.
OceanStor VIS6000 Series Virtual Intelligent Storage
System
Initial Configuration Guide
Issue 08 (2010-05-10)