# How to migrate index without disturbing client? **URL:** \ **Category:** Elasticsearch\ **Created:** [May 29, 2015, 12:38pm UTC](https://discuss.elastic.co/t/how-to-migrate-index-without-disturbing-client/1561 "2015-05-29T12:38:21Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![Mehmet\_Ozer](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/mehmet_ozer/32/81567_2.png) [@Mehmet\_Ozer](https://discuss.elastic.co/u/Mehmet_Ozer)\ **Post date:** [May 29, 2015, 12:38pm UTC](https://discuss.elastic.co/t/how-to-migrate-index-without-disturbing-client/1561/1 "2015-05-29T12:38:21Z")
Hello, I am running a cluster which contains many indexes. In the near future I will have new machines so that I will need to migrate my indexes to those machines. I have thought some scenarios but it will not be possible to do so. Let me explain what I thought and why it was not possible; - I wanted to put the new machines into existing cluster and then I thought I could use exclude.\_ip option to exclude existing machines. So that old indexes would have migrated. - I cannot restart the cluster because I have 9 tera of data so it can take one day to restart all cluster. This seemed possible for me but I can not stop working on the index, users should continue making searches on the indexes. So can you please tell me how I can migrate the data without disturbing clients ? Thank you ---
**Author:** ![magnusbaeck](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/magnusbaeck/32/44943_2.png) [@magnusbaeck](https://discuss.elastic.co/u/magnusbaeck)\ **Post date:** [May 29, 2015, 1:54pm UTC](https://discuss.elastic.co/t/how-to-migrate-index-without-disturbing-client/1561/2 "2015-05-29T13:54:16Z")
For posterity, this topic has been discussed here: [https://groups.google.com/d/topic/elasticsearch/v4hZe6MHoEw/discussion](https://groups.google.com/d/topic/elasticsearch/v4hZe6MHoEw/discussion) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 12:10am UTC](https://discuss.elastic.co/t/how-to-migrate-index-without-disturbing-client/1561/3 "2017-07-06T00:10:48Z")