Compare and Contrast Different Storage Topologies Relevant to Dell PowerEdge Servers: Direct Attached Storage (DAS), Network Attached Storage (NAS), and Storage Area Networks (SAN). POWEREDGE-FOUNDATIONS-V2 Practice Questions (Page 4)

Questions 16–20

1. 16foundation · easy

   What is a key characteristic of Network Attached Storage (NAS) in a PowerEdge environment?

   • AIt requires specialized host bus adapters (HBAs) for connectivity
   • BIt provides block-level access to storage over a dedicated Fibre Channel network
   • CIt provides file-level access to multiple clients over a standard Ethernet network
   • DIt is directly attached to a single server and not accessible over the network
   Reveal Solution Discussion Select an answer first
2. 17foundation · easy

   What is the primary difference between NAS and SAN in terms of access method?

   • ABoth provide block-level access
   • BBoth provide file-level access
   • CNAS provides file-level access, while SAN provides block-level access
   • DNAS provides block-level access, while SAN provides file-level access
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Which storage topology provides block-level access to storage over a dedicated high-speed network, often using Fibre Channel or iSCSI?

   • ADirect Attached Storage (DAS)
   • BNetwork Attached Storage (NAS)
   • CStorage Area Network (SAN)
   • DCloud storage
   Reveal Solution Discussion Select an answer first
5. 19foundation · easy

   Which scenario is a typical use case for Direct Attached Storage (DAS) in a PowerEdge environment?

   • AA backup server that needs to access storage from multiple remote sites over WAN
   • BA database server that requires low-latency, dedicated storage for its local data files
   • CA file server that needs to share documents with hundreds of users over the network
   • DA virtualization host that needs to share a storage pool across multiple servers for live migration
   Reveal Solution Discussion Select an answer first
6. 20expert · hard

   A company runs a large-scale data analytics platform on Dell PowerEdge servers. The platform uses Apache Spark, which reads and writes large files. The company has a 25 GbE network and wants to minimize storage management overhead. They are considering NAS and SAN. Which storage topology is more appropriate?

   • ADAS on each server, because it provides the highest throughput.
   • BSAN using iSCSI, because it provides block-level access and higher performance.
   • CNAS using NFS, because Spark can read/write files over NFS and it is easier to manage than a SAN.
   • DSAN using Fibre Channel, because it offers the lowest latency.
   Reveal Solution Discussion Select an answer first