2021-04-15 21:35:12 +08:00
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[role="xpack"]
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[[autoscaling-frozen-shards-decider]]
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=== Frozen shards decider
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The frozen shards decider (`frozen_shards`) calculates the memory required to search
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2021-05-20 17:18:42 +08:00
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the current set of partially mounted indices in the frozen tier. Based on a
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required memory amount per shard, it calculates the necessary memory in the frozen tier.
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2021-04-15 21:35:12 +08:00
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[[autoscaling-frozen-shards-decider-settings]]
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==== Configuration settings
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`memory_per_shard`::
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(Optional, <<byte-units,byte value>>)
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The memory needed per shard, in bytes. Defaults to 2000 shards per 64 GB node (roughly 32 MB per shard).
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Notice that this is total memory, not heap, assuming that the Elasticsearch default heap sizing
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mechanism is used and that nodes are not bigger than 64 GB.
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