--- sourceDocument: zurich Combined Product Files sourceDocumentLink: https://www.servicenow.com/docs/r/zurich/delta-xanadu-zurich Release : - zurich ft:locale : - en-US ft:publication_title : - zurich Combined Product Files ft:clusterId : - delta3zx bundleId : - delta3zx --- # Combined Instance Data Replication release notes for upgrades from Xanadu to Zurich # Combined Instance Data Replication release notes for upgrades from Xanadu to Zurich {#ariaid-title1} Release version: Zurich Updated October 8, 2026 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 5 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of Combined Instance Data Replication release notes for upgrades from Xanadu to Zurich This consolidated release note provides ServiceNow customers with a comprehensive guide to Instance Data Replication (IDR) updates and changes across releases from Xanadu through Zurich. It is designed to assist you in preparing for your upgrade by summarizing new features, performance improvements, deprecations, and activation requirements relevant to Instance Data Replication. Show full answer Show less ## Important Upgrade Information * **Upgrade to V2 Replication Sets:** Starting from Yokohama and continuing in Zurich, upgrading legacy replication sets to V2 is essential. V2 leverages Hermes Messaging Service, enhancing replication performance and processing efficiency. * **Log Rotation:** Post-upgrade to Yokohama or Zurich, log rotation is automatically enabled for the `Replication Payload Error [idrreplicationpayloaderror]` table, using a default schedule of seven shards with five days per shard. Logs created before the upgrade are truncated automatically. * **Deprecations:** Legacy replication sets are deprecated in Zurich and no longer supported. Additionally, the Key Management Service and VAULT Service Status tests are removed from the IDR Diagnostics page. ## New Features * **Scheduled Seeding (Yokohama):** Allows replication of data from a producer to a consumer at scheduled times daily. * **Concurrent Seeding Requests (Yokohama):** Enables running multiple seeding requests concurrently across different replication sets, with one active request per set. * **Automatic Seeding of Missing or Mismatched Records (Yokohama):** Automatically triggers seeding for missing or mismatched records during data comparison requests. * **Monitoring Enhancements (Zurich):** Introduces the IDR Monitoring Dashboard to track scheduled replication sets and a related list for monitoring scheduled replication requests, improving visibility into replication progress. ## Changes and Improvements * **Seeding and Data Comparison Enhancements (Yokohama):** V2 replication sets now support unlimited record counts in seeding requests and data comparisons, including attachment reseeding. * **Performance Optimizations (Yokohama):** Improvements in seeding throughput and message queue efficiency boost overall replication speed and reliability. * **UI Theme Update (Zurich):** The new Coral theme becomes the default for portals, web, and mobile experiences with Next Experience or Core UI enabled, featuring brand-neutral illustrations and a dark theme option to improve usability and reduce eye strain. ## Activation and Subscription Instance Data Replication is a ServiceNow AI Platform feature requiring activation of the `IDR (com.glide.idr)` plugin along with a separate subscription. This remains consistent from Yokohama through Zurich releases. ## Accessibility and Localization * The Coral theme includes a dark mode option for enhanced accessibility by reducing eye strain and improving readability. * No new localization or browser requirements have been introduced between Xanadu and Zurich. ## Practical Takeaways for ServiceNow Customers * Prepare to upgrade all legacy replication sets to V2 before or during the Zurich upgrade to maintain support and leverage performance enhancements. * Leverage new scheduling and monitoring capabilities to optimize replication workflows and gain better operational insights. * Utilize increased limits on seeding and data comparison requests to handle larger data volumes efficiently. * Enable and configure log rotation post-upgrade to manage replication error logs effectively. * Consider adopting the Coral theme with dark mode for improved user experience in portal and mobile interfaces. Consolidated page of all release notes for Instance Data Replication from Xanadu 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 Xanadu 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. {#dfrn3-instancedatareplication-summary__entry__2} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | Upgrade information : 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](https://www.servicenow.com/docs/access?context=upgrading-legacy-replication-sets-v2&family=yokohama&ft:locale=en-US). 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 | Upgrade information : * 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](https://www.servicenow.com/docs/access?context=upgrading-legacy-replication-sets-v2&family=zurich&ft:locale=en-US). * 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. {#dfrn3-instancedatareplication-summary__entry__10} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | [Scheduled seeding](https://www.servicenow.com/docs/access?context=set-up-scheduled-replication-idr&family=yokohama&ft:locale=en-US) : Replicate data from a producer to a consumer at scheduled times each day. [Multiple seeding requests](https://www.servicenow.com/docs/access?context=seed-consumer-instance&family=yokohama&ft:locale=en-US) : Run concurrent seeding requests across multiple replication sets, with up to one active request per set. [Automatically seed missing or mismatched records](https://www.servicenow.com/docs/access?context=compare-replicated-data&family=yokohama&ft:locale=en-US) : Automatically seed missing or mismatched records when you create a data comparison request. | | Zurich | [Monitor scheduled replication sets](https://www.servicenow.com/docs/access?context=instance-data-replication-dashboard&family=zurich&ft:locale=en-US) : Monitor the progress your scheduled replication sets in the IDR Monitoring Dashboard. [Track scheduled replication requests](https://www.servicenow.com/docs/access?context=set-up-scheduled-replication-idr&family=zurich&ft:locale=en-US) : 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. {#dfrn3-instancedatareplication-summary__entry__18} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | [Seeding request improvements](https://www.servicenow.com/docs/access?context=exploring-instance-data-replication&family=yokohama&ft:locale=en-US) : In V2 replication sets, the number of records in a seeding request is now unlimited. [Data comparison improvements](https://www.servicenow.com/docs/access?context=comparing-replicated-data&family=yokohama&ft:locale=en-US) : In V2 replication sets, the number of records in comparison or reseeding counts is now unlimited. [Reseed missing attachments](https://www.servicenow.com/docs/access?context=comparing-replicated-data&family=yokohama&ft:locale=en-US) : Attachments are now included in data comparison requests. [Seeding performance improvements](https://www.servicenow.com/docs/access?context=seed-consumer-instance&family=yokohama&ft:locale=en-US) : Seeding throughput and message queue efficiency has been optimized in IDR. | | Zurich | Coral theme : Coral is now the default theme for new portal, web, and mobile experiences with Next Experience or Core UI enabled. This theme provides a fresh look and feel, featuring brand-neutral illustrations to enhance your user experience. A dark theme option is available for web and mobile experiences. | [ ] ## Removed Between your current release family and Zurich, some Instance Data Replication features or functionality were removed. {#dfrn3-instancedatareplication-summary__entry__26} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | No updates for this release. | | Zurich | No updates for this release. | [ ] ## Deprecations Between your current release family and Zurich, some Instance Data Replication features or functionality were deprecated. {#dfrn3-instancedatareplication-summary__entry__34} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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](https://www.servicenow.com/docs/access?context=upgrading-legacy-replication-sets-v2&family=yokohama&ft:locale=en-US). | | Zurich | Legacy replication sets have been deprecated in the Zurich release and are no longer supported. * 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. | [ ] ## Activation information Review information on how to activate Instance Data Replication. {#dfrn3-instancedatareplication-summary__entry__42} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | Activation information : 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](https://www.servicenow.com/docs/access?context=request-instance-data-replication&family=yokohama&ft:locale=en-US). | | Zurich | Activation information : 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](https://www.servicenow.com/docs/access?context=request-instance-data-replication&family=zurich&ft:locale=en-US). | [ ] ## Additional requirements If any additional requirements were introduced or changed for Instance Data Replication we have noted them here. {#dfrn3-instancedatareplication-summary__entry__50} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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. {#dfrn3-instancedatareplication-summary__entry__58} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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. {#dfrn3-instancedatareplication-summary__entry__66} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | Yokohama | No updates for this release. | | Zurich | Accessibility information : Dark theme : The new Coral theme includes a dark theme option for web and mobile experiences. This option is commonly used to alleviate eye strain and improve readability. | [ ] ## Localization information If there are specific localization considerations for Instance Data Replication we have noted them here. {#dfrn3-instancedatareplication-summary__entry__74} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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. {#dfrn3-instancedatareplication-summary__entry__82} | Release | Release notes | |-|-| | Xanadu | No updates for this release. | | 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](https://www.servicenow.com/docs/access?context=instance-data-replication&family=yokohama&ft:locale=en-US) 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](https://www.servicenow.com/docs/access?context=instance-data-replication&family=zurich&ft:locale=en-US) for more information. | [ ]