Drag and Drop Question You plan to deploy multiple SAP HANA virtual machines to Azure by using an Azure Resource Manager template. How should you configure Accelerated Networking and Write Accelerator

The correct answer is true; true. SAP HANA on Azure: Accelerated Networking & Write Accelerator This question has two configuration targets in an ARM template, both set to true. --- Target 1: Accelerated Networking → true What it is: Accelerated Networking enables SR-IOV (Single Root I/O Virtualization) on the VM

Design and implement an infrastructure to support SAP workloads on Azure

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Drag and Drop Question You plan to deploy multiple SAP HANA virtual machines to Azure by using an Azure Resource Manager template. How should you configure Accelerated Networking and Write Accelerator in the template? To answer, drag the appropriate values to the correct targets. Each value may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content. NOTE: Each correct selection is worth one point. Answer:

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Falsenonetrue

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true
true

Explanation

SAP HANA on Azure: Accelerated Networking & Write Accelerator

This question has two configuration targets in an ARM template, both set to true.

Target 1: Accelerated Networking → `true`

What it is: Accelerated Networking enables SR-IOV (Single Root I/O Virtualization) on the VM's NIC, bypassing the hypervisor for network traffic and dramatically reducing latency and CPU overhead.

Why true: Microsoft mandates Accelerated Networking for SAP HANA on Azure. HANA is an in-memory database that processes massive datasets and requires ultra-low network latency for:

HANA System Replication (HSR) between nodes
Client application traffic

In the ARM template, this appears as:

"enableAcceleratedNetworking": true

Target 2: Write Accelerator → `true`

What it is: Write Accelerator is an Azure feature exclusive to M-Series VMs (the recommended VM family for HANA) that reduces write I/O latency on Azure Premium SSD managed disks.

Why true: SAP requires redo log write latency of <1ms. Premium SSD alone cannot consistently meet this threshold. Write Accelerator bridges the gap by caching writes in a dedicated write buffer. It must be enabled on the log volume disks specifically.

In the ARM template, this appears as:

"writeAcceleratorEnabled": true

Why `false` and `none` Are Wrong

Option	Why it's incorrect
`false`	Disabling either feature violates SAP/Microsoft support requirements for HANA production workloads
`none`	Not a valid value for either boolean property; this is a distractor

Common Misconceptions

"Write Accelerator is optional" - It is a hard SAP requirement for HANA log volumes; without it, the system may not be supportable by SAP.
"Write Accelerator applies to all disks" - Only enable it on log volume disks, not data or backup volumes (it's also restricted to Premium SSDs, not Ultra Disks which handle latency natively).
"Any VM series supports Write Accelerator" - It is only available on M-Series VMs; enabling it on other VM families will cause deployment errors.

Topics

#Accelerated Networking#Write Accelerator#ARM template#SAP HANA VM

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