VMware Validated Design Documentation. Architecture and Design: Conceptual Design. Retrieved from docs.vmware.com. (Defines the core design qualities including Availability, Manageability, Performance, Recoverability, and Security).
VMware vSphere: Design [v7]. Official Courseware, Module: Design Fundamentals. (The specific definitions provided in the image match the verbatim descriptions found in the official VMware vSphere Design training materials regarding Non-Functional Requirements).
Lowe, S. (2010). VMware vSphere Design. Sybex. (Discusses the distinction between Availability and Recoverability, and the components of Manageability in virtual infrastructure).