CompTIA
CV0-003 · Question #218
CV0-003 Question #218: Real Exam Question with Answer & Explanation
The correct answer is D: SAN. SAN provides centralized, shared block storage that supports diskless boot, enabling hypervisor OS images to be stored and cloned across hosts without using local drives.
Cloud Architecture and Design
Question
When designing a new private cloud platform, a cloud engineer wants to make sure the new hypervisor can be configured as fast as possible by cloning the OS from the other hypervisor. The engineer does not want to use local drives for the hypervisors. Which of the following storage types would BEST suit the engineer's needs?
Options
- ACAS
- BNAS
- CDAS
- DSAN
Explanation
SAN provides centralized, shared block storage that supports diskless boot, enabling hypervisor OS images to be stored and cloned across hosts without using local drives.
Common mistakes.
- A. CAS (Content Addressable Storage) is designed for immutable object storage retrieved by content hash, such as archiving; it is not suitable for block-level OS booting or real-time hypervisor workloads.
- B. NAS provides file-level access over NFS or SMB, which can host VM data files but does not natively present the raw block devices needed for diskless boot from a cloned OS image.
- C. DAS (Direct Attached Storage) is physically connected to a single host; it cannot be shared across hypervisors for cloning and directly contradicts the requirement to avoid local drives.
Concept tested. SAN boot-from-SAN for diskless hypervisor provisioning
Reference. https://learn.microsoft.com/en-us/azure-stack/hci/concepts/storage-spaces-direct-overview
Topics
#SAN#hypervisor storage#storage types#OS cloning
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