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InfluxDB
Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Longhorn is a good option. It's pretty easy to install and get up and running in a k8s cluster.
I’m currently dealing with this and am working with a solution based on targetd which provides storage via NFS or ISCSI backed by LVM or ZFS. Super simple and doesn’t need to replicate data across nodes and easily supports asymmetric storage solutions common in homelabs. I got the idea from here (not mine): https://github.com/dsonck92/targetd-provisioner
If you start learning kubernetes then tale a look at crossplane as well. https://crossplane.io/