DR site

I suppose that your question is related to the selection of an external provider that give you a DR site. If so, from my point of view is more important that you take into consideration other parameters like support that they can give you (hours, phone, email, etc), the availability and capacity that they provide (should be established in the SLA), certifications (ISO 20000, ISO 27001, ISO 22301, etc), distance from the main data center, guarantees of services, and of course references of another clients (maybe you can find interesting information with your favorite search engine).
Anyway, keep in mind that the Disaster Recovery is focussed in the information technology, and it is not the same that business continuity. For more information about this, please read this article “Disaster recovery vs. Business continuity” : https://advisera.com/27001academy/blog/ 2010/11/04/disaster-recovery-vs-business-continuity/
And also this article about the distance of the disaster recovery can be interesting for you “Disaster recovery site – What is the ideal distance from primary site?” : https://advisera.com/27001academy/knowledgebase/disaster-recovery-site-what-is-the-ideal-distance-from-primary-site/