Method used to modify the LUN write back policy

1. If write policy is changed to write back without mirroring or mandatory write back without mirror, the cache data in the LUN may be lost. Perform this operation with caution.

2. Go to the Modify LUN dialog box.
In the ISM navigation tree, choose All Devices > SN_XX > Storage Resources > LUN (SN_XX is the name of the target storage system).
In the right function pane, select the LUN you want to modify.
Click Modify.
The Modify LUN dialog box is displayed.
Modify the basic and advanced attributes of the LUN.

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