Migration Timeline Question

[Lawrence]

Hello,

We are preparing to migrate from Jira Data Center to Jira Government Cloud and are looking for timeline estimates from others who have completed migrations of a similar size.

Environment details:
Jira Data Center Version 9.12.31 (Soon to be on 10.3.19)
1-node Jira Data Center deployment
~400 projects
~410,000 issues
~1,300 users
~700 custom fields
12 installed apps total; 4 apps will be migrated (Email This Issue, BigPicture, Jira Workflow Toolbox, EazyBI)

Identity and access:
SCIM provisioning will be used
SSO is already fully configured

Environments:
3 Jira environments (1 production, 2 non-production)
Both non-production environments contain non-production data

Additional context:
Only 4 apps will migrate; the remaining apps will not be brought to Cloud.
---> We are seeking general expectations on how long migrations of this scale have taken (for example: 3 months, 6 months, 9 months, etc.)

We would appreciate any examples, guidance, or ranges based on past migrations of a comparable size, including time needed for planning, test runs, validation, and final cutover.

Thank you

[Sergio García-Consuegra _Decadis AG_]

Hi @Lawrence ,

My name is Sergio, and I'm a member of the support team from Decadis. We would be pleased to answer any of your doubts regarding migrating our app Jira Workflow Toolbox in our customer portal.

As it was mentioned before, you can obtain some detailed information regarding our migration process in our Migrate JWT DC to JWT Cloud page from our documentation.

JWT does support the Jira Cloud Migration Assistant, offering an automated app migration path. You can find all the required steps for the migration in the Automated migration path page from our documentation.

If you have any specific questions about the JWT migration process, feel free to open a new request in our customer portal. Alternatively, you can post them in this thread, and I’ll be happy to help.

Thank you.

Best regards,
Sergio

[Aaron Pavez _ServiceRocket_]

Hi @Lawrence 

The timeline on how many months it'll take is tricky. You have:

1. Customer timeline (Jira DC licenses, app licenses,  other business priorities that impact how soon you need to move to cloud)

2. downtime to test migration ( you only have one node, which limits when you can migrate and test)

Roughly, it can be 3 to 6 months. leave plenty of time for UAT1, UAT2, test, test and tes. I can't stress this enough. test!

---

For this, you are missing what it takes the most, the attachments. 1 TB can take 15-20 hours.

~400 projects
~410,000 issues
~1,300 users
~700 custom fields

The data could take 3-5 hours.

There is a lot of docs that will help you test the migration (there is a lot to fix before testing)

https://support.atlassian.com/migration/docs/what-gets-migrated-with-the-jira-cloud-migration-assistant/

https://support.atlassian.com/migration/docs/run-pre-migration-checks-review-and-run-a-jira-migration/

https://support.atlassian.com/organization-administration/docs/ip-addresses-and-domains-for-atlassian-cloud-products/

https://confluence.atlassian.com/adminjiraserver/increasing-jira-application-memory-938847654.html

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And now APPS!!

Understand and read how to migrate each app to cloud(some of them have an easy path using JCMA, others not su much)

https://docs.meta-inf.hu/email-this-issue/server-to-cloud-migration/server-to-cloud-automatic-migration-tool?_gl=1*l04n6n*_ga*MzQ1NzA0MS4xNzczOTIxNzgw*_ga_RQ2XS1ZP6N*czE3Nzc0Nzc0MjIkbzEkZzEkdDE3Nzc0Nzc0MjckajU4JGwwJGgw

https://appfire.atlassian.net/wiki/spaces/DLP/pages/297896980/Migration+using+Jira+Cloud+Migration+Assistant+JCMA

https://apps.decadis.net/spaces/JWTCLOUD/pages/62882489/Migrate+JWT+DC+to+JWT+Cloud

https://docs.eazybi.com/eazybi/set-up-and-administer/atlassian-data-center/database-migration#Databasemigration-ServertoCloud

1. Open a ticket with each vendor. They can guide you and will happily do so.

Good luck!