---
sourceDocument: Xanadu ServiceNow AI Platform Administration
sourceDocumentLink: https://www.servicenow.com/docs/r/xanadu/platform-administration

 Release :

    - xanadu

ft:locale :

    - en-US

ft:publication_title :

    - Xanadu ServiceNow AI Platform Administration

ft:clusterId :

    - platadm

bundleId :

    - platadm

workflow :

    - Platform


---

# Factors affecting upgrade duration

# Factors affecting upgrade duration {#ariaid-title1}

* Release version: Xanadu
* 
* Updated August 1, 2024
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 1 minute to read

Various factors affect how long the system takes to perform an upgrade. The Upgrade
Monitor on non-production instance can help you understand those factors and estimate how long the
upgrade to your production instance takes.  
Many factors can affect the duration of the upgrade process:

* The number of records in the database
* The number of customizations in the database
* The number of nodes in the instance
* The size of tables in the instance that require a schema-change in the instance
* The number of fix scripts required and the size of the tables those fix scripts manipulate
{#uc-factors-duration__ul_yxc_jlh_plb}  
Upgrading a non-production instance can help you estimate how long the upgrade takes on production, but differences between the instances can significantly affect the duration:

* When you cloned the production instance to the non-production instance, you may have clone-excluded some tables. This reduces the size of the database and makes the non-production instance upgrade faster than the production instance.
* The production instance may have more memory and processing power.
* The production instance may have more nodes than the non-production instance.
{#uc-factors-duration__ul_mfb_mlh_plb}

After upgrading the first non-production instance, examine the [Upgrade Summary Report](https://www.servicenow.com/docs/WAHHcRK5kIisLMtG3ygfWw "The Upgrade Summary report summarizes the actions taken, provides tools to resolve conflicts between customizations and changes that are part of the upgrade, and provides information to help estimate time for upgrades to other instances.") for data to help estimate the impact of these
factors.