Cabling security

Answer:
If I have understood your question well, you want to implement the control 11.2.3 cabling security through documenting and demonstrating the physical access controls that are in place, and from my point of view it is enough, although it can be better if you perform periodical physical inspections to review if everything is according to the documented procedures (this review will be also performed by auditors).

By the way, this case study related to data centers can be interesting for you “ISO 27001 Case study for data centers: An interview with Goran Djorerki” : https://advisera.com/27001academy/blog/2013/10/29/iso-27001-case-study-for-data-centers-an-interview-with-goran-djoreski/

And of course, our online course can be also very interesting for you because we give more information about the security controls of the standard and about the implementation of ISO 27001 “ISO 27001:2013 Foundations Course” : https://advisera.com/training/iso-27001-foundations-course/