What will be approximate time to migrate from other tracker tools like rally or redmine to JIra?

[Krithica GowriSankar]

What will be approximate time to migrate from other tracker tools like rally or redmine to JIra?

say if i have to migrate 100 projects with approximately 1000 issues each how much time will it take to for the csv export and import to jira ? 

[Jack Brickey]

I think it will depend on whether you go it alone or hire an Atlassian partner. If you will tackle yourself...

no Jira experience - maybe 3-4wks

a lot of Jira experience - maybe 2 weeks

once you get the first few projects done the others will come over more readily