Requirements of Single Instance SLA

Question

Hi

I know Azure now offers 99.9% SLA on single instance of virtual machine provided you meet some requirements. The requirements I believe are you must use premium storage (SSD) for all drives.

Does this means using a DS* series VM fulfills this requirement and as long as any extra disk I attach to that VM is also SSD, I am covered with that SLA?

Thanks, Piyush

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Piyush Gupta

Answer 1

For any Single Instance Virtual Machine using premium storage for all Operating System Disks and Data Disks, we guarantee you will have Virtual Machine Connectivity of at least 99.9%

https://azure.microsoft.com/en-us/support/legal/sla/virtual-machines/v1_6/

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Mustafa Toroman, Azure MVP

Answer 2

In addition to Mustafa’s reply: Yes, you are covered with that SLA if you are using a DS* series VM that fulfills this requirement as long as any extra disk you attach to that VM is also SSD.

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Answer 3

Hi Sam, Piyush,

Having read the SLA information, for a single instance VM with Premium Storage the SLA is reduce to 99.9% which amounts to a potential downtime of 8h and 45 mins per year.

Can you tell me how much notice do we get from MSFT for planned maintenance (as I suspect the downtime above is primarily due to maintenance carried out)?

Thanks,

Answer 4

During planned maintenance outages for VM's warnings are sent to customers when Azure is about to be updated. Notification sent at least 30 days before the impact.

Both pre-emptive maintenance and scheduled maintenance phases begin with a notification. Expect to receive a single notification per Azure subscription. The notification is sent to the subscription’s admin and co-admin by default. You can also configure the audience for the maintenance notification.

For more information refer this article.

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