What are disadvantages to storage directly attached to the application servers? (Choose three.)

A.
reliability

B.
scalability

C.
redundancy

D.
manageability

Explanation:

B: System administrators are faced with the challenging task to managing storage and making it scalable to accommodate future needs.
With storage directly attached to the server, scalability is difficult. The storage expansion capability is limited to the capacity of the server (for example, as measured by the number of I/O controllers and devices per controller configured is the server). The nature of the small computer system (SCSI) bus commonly used to connect commodity disks to a commodity server makes it difficult to allocate more disk storage without interrupting and rebooting the server, and thus affecting applications.

C: No redundancy is provided

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Cisco 642-874 Exam
Reference: Arch student guide p.13-6.