# Changing the write-cache mode

Note: This action is not supported on enclosures with a dual controller configuration.

Use this action to change the write-cache mode setting of all the physical drives in an array. The write-cache mode determines if a physical drive stores data before or after sending a confirmation to the controller.

Attention: It is possible to lose data if a power outage occurs while using the write-back setting. Consider carefully whether to use the write-back setting on a physical drive. Depending on how you use the system, the write-back setting might be undesirable.

1. In the Logical devices view, click(array).
2. Right-click Configure write cache write back or write through.
3. Click Yes to confirm.

## More information

- Understanding write-cache mode for physical drives

Glossary | Contents

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