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Architecting Microsoft Azure Solutions: Exam Guide 70-535
book

Architecting Microsoft Azure Solutions: Exam Guide 70-535

by Sjoukje Zaal
April 2018
Intermediate to advanced
418 pages
9h 41m
English
Packt Publishing
Content preview from Architecting Microsoft Azure Solutions: Exam Guide 70-535

Fault domains and update domains

When you place your VMs in an Availability Set, Azure guarantees to spread them across fault and update domains. By default, Azure will assign three fault domains and five update domains (which can be increased to a maximum of 20) to the Availability Set.

When spreading your VMs over fault domains, your VMs sit over three different racks in the Azure data center. So, in the case of an event or failure on the underlying platform, only one rack gets affected and the other VMs are still accessible.

VMs spread over three fault domains

Update domains are useful in the case of an OS or host update. When you spread ...

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Publisher Resources

ISBN: 9781788991735