Is my data stream not rolling over to a new index like it's supposed to?

We have a data stream created by Logstash and it's using the default index template and ILM policy. My understanding is that the data stream should roll over to a new index once the initial index has 50 GB of data or is 30 day sold. However, there's only one index and it's over 51 GB (Update: now over 55 GB). Shouldn't it have rolled over by now? Thanks for the help.
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It's likely that storage size represents the total of both primaries and the replicas shards.
ILM will rollover looks specifically at primary shard size only.

Ah, you might be right. I didn't realize that there was 1 replica by default. I have confirmed now that the primary shard is about half of the size reported on this page. Thanks!

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