Recovery of ES after crash takes lot of time

Hi All,

We are running 5 nodes ES cluster and each node server 300 shards. We are
creating indices per 4 hours (total number of records inserted in 4 hours =
40 millions).

Issue:
Recovery of ES after crash takes lot of time depending upon data and shards
available. We have seen around 15- 20 min recovery time.

How we can increase the recovery time of ES.

Thanks,
Ankit Jain

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