SK0-004 · Question #374
A sever administrator implements external storage for a file server. At a later time, another administrator wants to extend this storage to a second server but is unable to simultaneously connect to…
The correct answer is A. DAS. DAS (Direct Attached Storage) is physically tied to a single server and cannot be simultaneously shared with a second server.
Question
A sever administrator implements external storage for a file server. At a later time, another administrator wants to extend this storage to a second server but is unable to simultaneously connect to two servers. Which of the following storage types was implemented by the first administrator?
Options
- ADAS
- BNAS
- CVSAN
- DSAN
How the community answered
(26 responses)- A92% (24)
- C4% (1)
- D4% (1)
Why each option
DAS (Direct Attached Storage) is physically tied to a single server and cannot be simultaneously shared with a second server.
DAS connects storage directly to one host server via local interfaces such as SATA, SAS, or USB, providing no network interface or shared storage fabric. Because it is exclusive to the server it is physically connected to, a second administrator cannot extend or simultaneously connect a second server to DAS - exactly the limitation described in the scenario.
NAS (Network Attached Storage) provides file-level access over a standard network using protocols such as NFS or SMB, allowing multiple servers and clients to connect simultaneously.
VSAN (Virtual Storage Area Network) is a software-defined storage solution that pools storage resources across clustered hosts and supports concurrent access from multiple servers and virtual machines.
SAN (Storage Area Network) uses a dedicated high-speed fabric such as Fibre Channel or iSCSI to deliver block-level storage to multiple servers simultaneously.
Concept tested: DAS single-server limitation vs shared storage architectures
Source: https://learn.microsoft.com/en-us/azure/architecture/guide/technology-choices/storage-options
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