With the release of Confluent Platform 6.0, we officially made Tiered Storage generally available. At launch, we supported two major cloud-specific object stores: Amazon S3 and Google Cloud Storage. Today, we are very excited to add support for our first on-premises object storage: FlashBlade from Pure Storage.

https://www.confluent.io/blog/get-cloud-like-flexibility-elasticity-infinite-storage-on-prem-with-confluent-pure-storage/

Storage is absolutely critical to get right, which is why we worked very closely with Pure Storage for this certification. It was an absolute treat to work with the team—they certainly know their stuff and we think you’ll be impressed with the performance, scale, reliability, and ease of use that comes with it.