ISO/IEC 27040 the international standard specifically dedicated to storage security
If you are an ISO 27001 certified organization, Annex A of 27001 now includes specific references to storage controls. ISO 27040 acts as the implementation guide for those controls. For example: iso iec 27040 pdf
Directly reference clause numbers in your evidence. For example: “See storage policy section 4.2.1 – adheres to ISO 27040:2024 Clause 6.4.3 (replication encryption).” Principle: Least privilege for storage administrators