Increase Network Performance of Azure Virtual Machines
Question
You have 100 Standard_F2s_v2 Azure virtual machines. Each virtual machine has two network adapters.
You need to increase the network performance of the workloads running on the virtual machines. The solution must meet the following requirements:
-> The CPU-to-memory ratio must remain the same.
-> The solution must minimize costs.
What should you do?
Answers
Explanations
Click on the arrows to vote for the correct answer
A. B. C. D.C
To increase the network performance of the workloads running on the virtual machines, we need to choose an option that satisfies the requirements of the scenario while minimizing costs.
Option A: Configure NIC teaming
NIC teaming is a feature that allows multiple network interface controllers (NICs) to be combined into a single logical interface, providing redundancy and increased bandwidth. However, NIC teaming doesn't directly increase network performance, and it may even introduce some latency due to the overhead of managing the team.
Option B: Enable RDMA over InfiniBand
RDMA (Remote Direct Memory Access) is a technology that allows data to be transferred directly between memory locations on different systems, bypassing the CPU and operating system network stack. InfiniBand is a high-speed networking technology that supports RDMA. Enabling RDMA over InfiniBand can provide significant improvements in network performance, but it requires specialized hardware and software support, and may not be cost-effective for all scenarios.
Option C: Enable SR-IOV
SR-IOV (Single Root I/O Virtualization) is a technology that allows a physical NIC to be shared among multiple virtual machines, while providing each virtual machine with its own virtual NIC that has direct access to the physical NIC's hardware resources. This can provide significant improvements in network performance, as well as reduced CPU overhead and improved isolation between virtual machines. However, SR-IOV requires specialized hardware support and may not be available or cost-effective for all scenarios.
Option D: Install an additional network adapter
Installing an additional network adapter can provide increased network bandwidth and improved network performance. However, it also increases costs, both in terms of hardware and operational expenses such as configuration and management.
Therefore, the best option that satisfies the requirements of the scenario while minimizing costs is to enable NIC teaming. While NIC teaming does not directly increase network performance, it provides redundancy and some increased bandwidth, without requiring specialized hardware or software support. Additionally, it satisfies the requirement of keeping the CPU-to-memory ratio the same.
