Preparing the EDS Service

If the External Directory Synchronization (EDS) service is used along with Hosted Exchange 2016 on your installation, you must prepare the service as described in this section. Otherwise, skip this section.

To prepare the EDS service for switching subscriptions, perform these steps:

1. Reinstall the EDS service by following the instructions in Deploying the External Directory Synchronization Service. When reinstalling it, take into account the following:

   • You must keep the existing configuration of the EDS service. Its FrontNet IP address, DNS name, IIS web site, virtual directory, SSL certificate, and URLs must remain the same.
   • Use the existing configuration profiles and their resources. Do not create new configuration profiles and Hosted Exchange Configuration Profile resources for the EDS service.
   • Do not include the new EDS resources in your service templates.
   • Do not create new service templates for the EDS service.

   Note: Various versions of the EDS service, as well as their compatibility information, can be obtained in this KB article.

2. Prepare and write down the identifiers of the following resources:

   • Active Directory Synchronization (the resource that was created when the EDS service was installed the first time)
   • Hosted Exchange - AD Synchronization Configuration (one of the resources that you created when you reinstalled the EDS service)
   • Hosted Exchange - AD Synchronization User (one of the resources that you created when you reinstalled the EDS service)
   • Hosted Exchange - AD Synchronization Contact (one of the resources that you created when you reinstalled the EDS service)

3. Add this information to your resource map file:

   Copy

   {
       "adsync_rt": ID_OF_ACTIVE_DIRECTORY_SYNCHRONIZATION_RESOURCE,
       "aps_adsync_rt": ID_OF_HOSTED_EXCHANGE_AD_SYNCHRONIZATION_CONFIGURATION_RESOURCE,
       "aps_adsync_user_rt": ID_OF_HOSTED_EXCHANGE_AD_SYNCHRONIZATION_USER_RESOURCE,
       "aps_adsync_contact_rt": ID_OF_HOSTED_EXCHANGE_AD_SYNCHRONIZATION_CONTACT_RESOURCE
   }

   For example:

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   {
       "adsync_rt": 500090,
       "aps_adsync_rt": 5500090,
       "aps_adsync_user_rt": 5500091,
       "aps_adsync_contact_rt": 5500092
   }