How many work items can JCMA migrate in a weekend (or a day)?

Question

I know that Atlassian has been improving the upload speed of JCMA, and wanted to see if anyone had experience or knowledge of the current speed. Two million issues in a weekend?

Assume that there are no other obstacles (complicated users, attachments, etc), just the work item data itself. Want to set some expectations for downtime.

Thank you!

Matteo Vecchiato · Answer

Hi @clipski

I haven't seen those number before sincerely and I think are too optimistics.

Anyway are based on statistical data, the only way to know how long will be your migration is to execute a test migration.

Kind regards

Arkadiusz Wroblewski · Answer

Hello @clipski

from experience, the numbers Atlassian shares are a good guideline, but the real factor is how well the migration is prepared.

Well-prepared migrations run much faster and more predictable.

For example:

- pre-migrating attachments ahead of the actual migration window makes a big difference

- reducing what you migrate during the downtime window helps a lot

- running test migrations upfront avoids surprises

The catch is that migration time still depends heavily on environment and setup, especially:

- JCMA version

- CPU/resources on the source side

- number of projects and parallelism

- network

- workflows/custom fields

Here some KB Article: https://support.atlassian.com/migration/docs/how-to-speed-up-your-jira-migration/

https://support.atlassian.com/portfolio-insights/docs/assistant-version-affecting-migration-time/

I will take a look on my actual numbers for you after my Weekend in Lovely Czechia and their Beer🍺

clipski · Answer

Realizing that the page I had open for the Portfolio Insights assessment includes a note about the median rate. So let me amend my question to be: are other people seeing this rate?