# Shard can't recovery and cant assign

**URL:** <https://discuss.elastic.co/t/shard-cant-recovery-and-cant-assign/30355>\
**Category:** Elasticsearch\
**Created:** [September 28, 2015, 1:48am UTC](https://discuss.elastic.co/t/shard-cant-recovery-and-cant-assign/30355 "2015-09-28T01:48:06Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![makeyang](https://avatars.discourse-cdn.com/v4/letter/m/f05b48/32.png) [@makeyang](https://discuss.elastic.co/u/makeyang)\
**Post date:** [September 28, 2015, 1:48am UTC](https://discuss.elastic.co/t/shard-cant-recovery-and-cant-assign/30355/1 "2015-09-28T01:48:06Z")

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I have a cluster with 30 machines and create one index per day with date as the index name. by unknown reason, es process crashed on some machines.  
then I found some shard will be unassigned.  
so my question is under what condition the shard can't be recoveried and under what condition the shard won't be assigned?

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [September 28, 2015, 8:44am UTC](https://discuss.elastic.co/t/shard-cant-recovery-and-cant-assign/30355/2 "2015-09-28T08:44:37Z")

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How much RAM do you have for the node?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 5, 2017, 11:47pm UTC](https://discuss.elastic.co/t/shard-cant-recovery-and-cant-assign/30355/3 "2017-07-05T23:47:50Z")

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Closed on July 5, 2017, 11:47pm UTC