350-601 · Question #362
Which virtualization feature is provided by network-attached storage?
The correct answer is C. VM cluster shared disk. Network-attached storage (NAS) provides shared storage that is crucial for virtualization environments, enabling multiple hypervisor hosts in a cluster to concurrently access the same virtual machine disk files.
Question
Which virtualization feature is provided by network-attached storage?
Options
- AALUA path redirection
- Bhypervisor host boot LUN
- CVM cluster shared disk
- Draw device passthrough
How the community answered
(39 responses)- A5% (2)
- C92% (36)
- D3% (1)
Why each option
Network-attached storage (NAS) provides shared storage that is crucial for virtualization environments, enabling multiple hypervisor hosts in a cluster to concurrently access the same virtual machine disk files.
ALUA (Asymmetric Logical Unit Access) path redirection is a feature of SAN (Storage Area Network) arrays that optimize multi-pathing to LUNs, not a virtualization feature typically provided by NAS.
While hypervisor hosts can boot from LUNs, this is typically done over a SAN (block storage) using technologies like iSCSI or Fibre Channel, rather than directly from NAS (file storage).
NAS allows virtual machine disk files to be stored on a centralized network share (e.g., NFS), which can then be accessed simultaneously by multiple hypervisor hosts. This shared disk capability is fundamental for cluster features like live migration (vMotion), high availability (HA), and distributed resource scheduling (DRS).
Raw Device Passthrough (RDM) allows a virtual machine to directly access a physical LUN from a SAN, bypassing the hypervisor's filesystem. This is a SAN-specific feature and not provided by NAS.
Concept tested: NAS virtualization features
Source: https://docs.vmware.com/en/VMware-vSphere/7.0/com.vmware.vsphere.storage.doc/GUID-D96F2874-9C74-4C3D-8A74-D7254A92A619.html
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