Distributed Action Handler 23.3

# Requirements

This section describes the software and hardware requirements for IDOL and the DAH.

## IDOL Servers Required

You must have at least two IDOL Servers installed for the DAH to distribute to.

NOTE: A single DAH can distribute to up to 1,024 IDOL Servers. However, OpenText recommends that you use the DAH to distribute to no more than 16 IDOL Servers, because distributing to a larger number can have a negative impact on processing time.

## State-Changing Actions File

In mirror mode, DAH uses the `sca.dat` file to determine the state-changing actions that it must distribute to all child servers.

When you are running the DAH in mirror mode, you must ensure that the `sca.dat` file is present. By default, this file must be in the same directory as the DAH, but you can also set the `SCAFileDirectory` configuration parameter to the location of this file.

If you upgrade DAH, you might need to download a new `sca.dat` file from the OpenText Software Licenses and Downloads portal (SLD). Refer to the Distributed Action Handler Release Notes.

Copyright 2023 Open Text
Version 23.3 | Last updated June 2023

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Product: IDOL Distributed Action Handler 23.3

Topic Title: Requirements