SLA of Lsv3-series in an availability set

Question

Hi,

I am working on to setup a 3 node cluster in Azure using Lsv3-series VMs (Standard_L8s_v3) in an availability set containing 3 fault domains and 3 update domains.
From azure documentation I know that VMs deployed in an availability set offer 99.95% uptime guarantee. However I could not find any documentation which tells exactly what will be the performance of this availability set when VMs it contains are from Standard_L8s_v3 sku.

From documentation -

The Lsv3-series of Azure Virtual Machines (Azure VMs) features high-throughput, low latency, directly mapped local NVMe storage. These VMs run on the 3rd Generation Intel® Xeon® Platinum 8370C (Ice Lake) processor in a hyper-threaded configuration. This new processor features an all-core turbo clock speed of 3.5 GHz with Intel® Turbo Boost Technology, Intel® Advanced-Vector Extensions 512 (Intel® AVX-512) and Intel® Deep Learning Boost.

The Lsv3-series VMs are available in sizes from 8 to 80 vCPUs. There are 8 GiB of memory allocated per vCPU, and one 1.92TB NVMe SSD device allocated per 8 vCPUs, with up to 19.2TB (10x1.92TB) available on the L80s_v3 size.

My question is, if we use Lsv3-series VMs in an availability set with 3 fault domains and 3 update domains, then what will be the uptime guarantee from Azure? Will it stay at 99.95% or will it be impacted because of type of disk used in Lsv3-series VMs?

Answer 1

Hi,

The uptime guarantee for Azure Lsv3-series VMs in an availability set with 3 fault domains and 3 update domains is still 99.95%. The type of disk used in Lsv3-series VMs does not impact the uptime guarantee.

The uptime guarantee is based on the availability of the underlying infrastructure, such as the physical servers, the fabric, and the network. The type of disk used in the VMs does not impact the availability of the underlying infrastructure.

However, the type of disk used in the VMs can impact the performance of the VMs. Lsv3-series VMs use NVMe SSDs, which offer high throughput and low latency. This means that the VMs will have good performance for applications that require high throughput and low latency, such as databases and web servers.

Overall, the uptime guarantee for Azure Lsv3-series VMs in an availability set with 3 fault domains and 3 update domains is 99.95%. The type of disk used in the VMs does not impact the uptime guarantee, but it can impact the performance of the VMs.

Regards,

Karthik Srinivas