# Snapshot restore compatibility metrics **URL:** \ **Category:** OpenSearch\ **Created:** [September 13, 2022, 2:12pm UTC](https://forum.opensearch.org/t/snapshot-restore-compatibility-metrics/10903 "2022-09-13T14:12:37Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![chaitra](https://avatars.discourse-cdn.com/v4/letter/c/7feea3/32.png) [@chaitra](https://forum.opensearch.org/u/chaitra)\ **Post date:** [September 13, 2022, 2:12pm UTC](https://forum.opensearch.org/t/snapshot-restore-compatibility-metrics/10903/1 "2022-09-13T14:12:37Z")
Hi, I m upgrading to Opensearch 2.x and want to restore indices created in Opensearch 1.x into Opensearch 2.x. Is there any compatibility metrics which shows is this operation permitted? I see [https://www.elastic.co/guide/en/elasticsearch/reference/current/snapshot-restore.html#snapshot-start-stop-times](https://www.elastic.co/guide/en/elasticsearch/reference/current/snapshot-restore.html#snapshot-start-stop-times) in elasticsearch. Can you please guide me on this ---
**Author:** ![radu.gheorghe](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.opensearch.org/radu.gheorghe/32/3516_2.png) [@radu.gheorghe](https://forum.opensearch.org/u/radu.gheorghe)\ **Post date:** [September 23, 2022, 3:51pm UTC](https://forum.opensearch.org/t/snapshot-restore-compatibility-metrics/10903/2 "2022-09-23T15:51:40Z")
I’m not aware of such a page, but I think a rule of thumb will be that you can import from one major version behind. At least as long as OpenSearch sticks to the same rule as Elasticsearch or Solr had so far: change the version along with the Lucene major version. We can see an exception to this rule for Elasticsearch with 6.8, which came up after 7.1 to backport some features. In this case 6.8 indices couldn’t be loaded by 7.1, but then again if you had 6.8 you’d probably would have upgraded to a higher version of 7.x anyway (because higher versions were already available).