Combined Instance Data Replication release notes for upgrades from Yokohama to Zurich

  • Release version: Zurich
  • Updated August 11, 2026
  • 4 minutes to read
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    Summary of Combined Instance Data Replication release notes for upgrades from Yokohama to Zurich

    This document consolidates all release notes for the Instance Data Replication (IDR) feature as customers upgrade from the Yokohama release family to the Zurich release family. It highlights new features, changes, removals, deprecations, and important upgrade tasks to help ServiceNow customers efficiently prepare and execute their IDR upgrades.

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    Key Features

    • Yokohama Introduced:
      • Scheduled seeding to replicate data at scheduled daily times.
      • Ability to run multiple concurrent seeding requests across replication sets.
      • Automatic seeding of missing or mismatched records triggered by data comparison requests.
      • Unlimited record counts in seeding and data comparison requests for V2 replication sets.
      • Inclusion of attachments in data comparison requests.
      • Optimized seeding throughput and message queue efficiency.
    • Zurich Introduced:
      • Monitoring capabilities via the IDR Monitoring Dashboard for scheduled replication sets.
      • Tracking progress of scheduled replication requests through related lists within scheduled replication sets.

    Important Upgrade Information

    • Performance and Efficiency: Both Yokohama and Zurich releases improve IDR performance and processing efficiency by upgrading replication sets to V2, which utilize the Hermes Messaging Service.
    • Log Management: Log rotation is automatically enabled for the Replication Payload Error table upon upgrade, using a default seven-shard schedule with five days per shard. Logs created before the upgrade are truncated automatically.
    • Deprecation and Removal: Legacy replication sets are deprecated and unsupported as of Zurich; customers must upgrade all legacy sets to V2 before upgrading.
    • Removed Diagnostics Tests: The Key Management Service and VAULT Service Status tests have been removed from the IDR Diagnostics page in Zurich.
    • Activation: IDR requires activation of the com.glide.idr plugin and a separate subscription in both Yokohama and Zurich releases.

    Key Outcomes for ServiceNow Customers

    • Upgrading to Zurich ensures enhanced monitoring and tracking of replication activities, providing greater operational visibility.
    • Improved data replication performance and reliability through V2 replication sets leveraging Hermes Messaging Service.
    • Streamlined error log management reduces administrative overhead with automated log rotation and truncation.
    • Mandatory upgrade from legacy replication sets to V2 avoids disruption and aligns with supported functionality.
    • Access to new features like scheduled seeding and automatic reseeding enables more efficient and accurate data replication workflows.

    Additional Notes

    No updates were introduced for browser requirements, accessibility, localization, or additional technical requirements between Yokohama and Zurich. Customers should review the consolidated notes carefully to ensure all pre- and post-upgrade tasks are completed to maintain IDR functionality and support.

    Consolidated page of all release notes for Instance Data Replication from Yokohama to Zurich.

    How to use this page

    To help you prepare for your upgrade, we have combined the cross-family Instance Data Replication release notes onto one page. Read this summary of the new features, changes, and updated information for your product from Yokohama to Zurich.

    Tip:
    If there were no updates for a release notes section in a certain family release, we included a short note for your reference. For example, if a product did not have any updates in Tokyo, the row says "No updates for this release."

    Important information for upgrading Instance Data Replication to Zurich

    Before you upgrade to Zurich, review these pre- and post-upgrade tasks and complete the tasks as needed.

    Release Release notes

    Yokohama

    Improve the performance and processing efficiency of Instance Data Replication (IDR) by upgrading your replication sets to V2, which uses Hermes Messaging Service. For details, see Upgrading legacy sets.

    Log rotation is automatically enabled for the Replication Payload Error [idr_replication_payload_error] table after the upgrade. By default, the log rotation schedule is comprised of seven shards, with five days for each shard. All log entries in this table created before the upgrade are automatically truncated.

    Zurich
    • Improve the performance and processing efficiency of Instance Data Replication (IDR) by upgrading your replication sets to V2, which uses Hermes Messaging Service. For details, see Upgrading legacy sets.
    • Log rotation is automatically enabled for the Replication Payload Error [idr_replication_payload_error] table after the upgrade. By default, the log rotation schedule is composed of seven shards, with five days for each shard. All log entries in this table created before the upgrade are automatically truncated.

    New features

    Between your current release family and Zurich, new features were introduced for Instance Data Replication.

    Release Release notes

    Yokohama
    Scheduled seeding
    Replicate data from a producer to a consumer at scheduled times each day.
    Multiple seeding requests
    Run concurrent seeding requests across multiple replication sets, with up to one active request per set.
    Automatically seed missing or mismatched records
    Automatically seed missing or mismatched records when you create a data comparison request.

    Zurich
    Monitor scheduled replication sets
    Monitor the progress your scheduled replication sets in the IDR Monitoring Dashboard.
    Track scheduled replication requests
    Track the progress of scheduled replication requests in the Scheduled Replication Requests related list.

    Changes

    Between your current release family and Zurich, some changes were made to existing Instance Data Replication features.

    Release Release notes

    Yokohama
    Seeding request improvements
    In V2 replication sets, the number of records in a seeding request is now unlimited.
    Data comparison improvements
    In V2 replication sets, the number of records in comparison or reseeding counts is now unlimited.
    Reseed missing attachments
    Attachments are now included in data comparison requests.
    Seeding performance improvements
    Seeding throughput and message queue efficiency has been optimized in IDR.

    Zurich

    		 No updates for this release.

    Removed

    Between your current release family and Zurich, some Instance Data Replication features or functionality were removed.

    Release Release notes

    Yokohama

    		 No updates for this release.

    Zurich
    • The Key Management Service test has been removed from the IDR Diagnostics page.
    • The VAULT Service Status test has been removed from the IDR Diagnostics page.

    Deprecations

    Between your current release family and Zurich, some Instance Data Replication features or functionality were deprecated.

    Release Release notes

    Yokohama

    Legacy replication sets are planned for deprecation by the Zurich release. To continue replicating data in Zurich, you must upgrade all legacy replication sets to V2. For details on upgrading legacy replication sets to V2 before the upgrade, see Upgrading legacy sets.

    Zurich

    Legacy replication sets have been deprecated in the Zurich release and are no longer supported.

    Activation information

    Review information on how to activate Instance Data Replication.

    Release Release notes

    Yokohama

    Instance Data Replication is a ServiceNow AI Platform feature that is available with activation of the IDR (com.glide.idr) plugin, which requires a separate subscription. For details, see Request an Instance Data Replication subscription.

    Zurich

    Instance Data Replication is a ServiceNow AI Platform feature that is available with activation of the IDR (com.glide.idr) plugin, which requires a separate subscription. For details, see Request a subscription.

    Additional requirements

    If any additional requirements were introduced or changed for Instance Data Replication we have noted them here.

    Release Release notes

    Yokohama

    		 No updates for this release.

    Zurich

    		 No updates for this release.

    Browser requirements

    If any specific browser requirements were introduced or changed for Instance Data Replication we have noted them here.

    Release Release notes

    Yokohama

    		 No updates for this release.

    Zurich

    		 No updates for this release.

    Accessibility information

    Review details on accessibility information for Instance Data Replication, such as specific requirements or compliance levels.

    Release Release notes

    Yokohama

    		 No updates for this release.

    Zurich

    Localization information

    If there are specific localization considerations for Instance Data Replication we have noted them here.

    Release Release notes

    Yokohama

    		 No updates for this release.

    Zurich

    		 No updates for this release.

    Highlight information

    If there are specific highlight considerations for Instance Data Replication we have noted them here.

    Release Release notes

    Yokohama
    • Replicate data that's frequently updated in large tables on your instance by scheduling data replication.
    • Queue multiple seeding requests from your producer instance.
    • Reseed missing or mismatched records automatically when creating a data comparison request.

    See Instance Data Replication for more information.

    Zurich
    • Monitor the progress of all your scheduled replication sets.
    • Track the progress of scheduled replication requests within a scheduled replication set.
    • Access details of scheduled replication requests within a scheduled replication set.

    See Instance Data Replication for more information.