Lustre = Linux + Cluster
It is a type of parallel distributed file system for large scale computing.
Used in ML and HPC, quant finance, EDA
Scales up to 100s of GB/s, millions of IOPS, <1ms latency
Can be mounted on-prem servers using DirectConnect.
You can use FSx as your "hot" storage and S3 for "cold" storage.
Seamless integration with S3