SK0-004 · Question #54
Which of the following is a basic difference between DAS and NAS?
The correct answer is D. DAS is directly connected to a server; NAS is connected via IP networking. The fundamental distinction between DAS and NAS is how they attach to the host - DAS uses a direct physical connection while NAS is accessed over a TCP/IP network.
Question
Which of the following is a basic difference between DAS and NAS?
Options
- ANAS requires fibre channel; DAS does not.
- BNAS is faster than DAS when using NFS.
- CDAS operates its own OS; NAS does not.
- DDAS is directly connected to a server; NAS is connected via IP networking.
How the community answered
(33 responses)- A3% (1)
- B3% (1)
- C6% (2)
- D88% (29)
Why each option
The fundamental distinction between DAS and NAS is how they attach to the host - DAS uses a direct physical connection while NAS is accessed over a TCP/IP network.
Fibre Channel is associated with SAN (Storage Area Network), not NAS, which uses standard IP networking protocols.
NAS is generally slower than DAS because it adds network latency and protocol overhead; DAS provides lower-latency direct access.
It is NAS - not DAS - that runs its own dedicated operating system or firmware to manage file sharing over the network.
Direct-Attached Storage (DAS) connects directly to a server via interfaces such as SATA, SAS, or USB, with no network involved. Network-Attached Storage (NAS) is a file-level storage device that connects to and is accessed through an IP-based network using protocols such as NFS or SMB/CIFS. This network-versus-direct-attachment distinction is the defining architectural difference between the two technologies.
Concept tested: DAS vs NAS storage architecture differences
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage
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