# Optimal Cluster Density Best Practices Video

In this video, we discuss optimal cluster density, and how over and under-clustering can affect your sequencing data. We will then examine common clustering issues and ways to prevent them.

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{% embed url="<https://www.youtube.com/watch?v=VZ7kFfYM03U&ab_channel=Illumina>" %}

Video length: 9:40 min

For further information, see [Cluster Optimization Overview Guide](https://support.illumina.com/downloads/cluster-optimization-overview-guide-1000000071511.html).

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