Which storage type is required for the Cloud Pak Platform UI?

The correct selection is File when the question is constrained to a single storage type. In IBM Cloud Pak for Business Automation, the Cloud Pak Platform UI, also known as Platform UI or Zen, is part of the foundational user-entry layer and requires persistent storage for platform user-management and service metadata. IBM's storage requirements table lists Platform UI / Zen as requiring persistent volume support and identifies Zen user management with a file system requirement. Object storage, represented by S3-compatible storage in IBM documentation, is preferred for some read-write-many scenarios and optional content-store patterns, but Platform UI / Zen is not listed as requiring S3 object storage. Block storage can be involved through RWO persistence for database-backed components, but the tested functional requirement maps to file-based persistence for the Platform UI service layer. Tape is irrelevant, object storage is not the Platform UI requirement, and File is the best answer. References/topics: CP4BA storage considerations, Platform UI / Zen, persistent volumes, RWO/RWX storage, Zen user-management file system.