AZ-801 · Question #140
Your network contains an Active Directory Domain Services (AD DS) forest. You need to deploy a Storage Spaces Direct converged infrastructure. The solution must meet the following requirements: Use an
The correct answer is C. iWARP. To deploy Storage Spaces Direct with an Ethernet fabric while eliminating Data Center Bridging (DCB), the iWARP RDMA networking technology should be implemented.
Question
- Use an Ethernet fabric.
- Eliminate the need for Data Center Bridging (DCB). Which Remote Direct Memory Access (RDMA) networking technology should you implement?
Options
- AInfiniBand
- BRoCEv2
- CiWARP
- DRoCEv1
How the community answered
(37 responses)- A5% (2)
- B3% (1)
- C89% (33)
- D3% (1)
Why each option
To deploy Storage Spaces Direct with an Ethernet fabric while eliminating Data Center Bridging (DCB), the iWARP RDMA networking technology should be implemented.
InfiniBand is a high-performance interconnect technology but is not an Ethernet fabric and does not meet the "Ethernet fabric" requirement.
RoCEv2 (RDMA over Converged Ethernet v2) requires a lossless Ethernet fabric, which typically necessitates Data Center Bridging (DCB) for proper operation, contradicting the requirement to eliminate DCB.
iWARP (Internet Wide Area RDMA Protocol) operates over standard Ethernet and TCP/IP, allowing it to function without the need for Data Center Bridging (DCB) to provide a lossless fabric. It handles congestion control at the TCP layer, making it suitable for Storage Spaces Direct deployments on an Ethernet fabric where DCB elimination is a requirement.
RoCEv1 (RDMA over Converged Ethernet v1) is an older standard that also requires a lossless Ethernet fabric and DCB, making it unsuitable for the requirement to eliminate DCB.
Concept tested: Storage Spaces Direct RDMA iWARP
Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/deploy-storage-spaces-direct
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