The optional InstallationDelay can be set by a Client to delay the actual installation after the call to InstallSoftwarePackage or InstallFiles is returned by the Server. This can be used when the installation is started on several devices in parallel and there is a risk that a reboot of one device could harm the connection to other devices. With a delay the install methods can be called on all devices before the devices actually start the installation. The InstallationDelay does not delay the transition from Idle to Installing.

This value could be preconfigured. If a Client wants to set this value it has to be done before the install method is called.

The Server is expected to stay operational at least during the delay.