# Initialize the IDOL Servers

The `DREINITIAL` index action allows the DIH to delete the data that each child IDOL server contains and reset the server to the state it was in when first installed. Use the following action syntax:

    http://DIHhost:IndexPort/DREINITIAL?

When you send this action to the DIH instead of to an IDOL server, note:

- `DIHhost` is the IP address (or name) of the machine on which the DIH is installed, and `IndexPort` is the number of the port that you use to send index actions to the DIH.
- All child servers of the DIH are reset.

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