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Azure SLA

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Καλημέρα σε όλους.

 

Μία (ή μάλλον δύο) απoρίες σχετικά με το Azure SLA:

 

Στο link: https://docs.microsoft.com/en-us/azure/virtual-machines/windows/infrastructure-availability-sets-guidelines αναφέρεται το παρακάτω:

 

The Azure SLA requires two or more VMs within an availability set to allow the distribution of VMs across the underlying infrastructure. If you are using Azure Premium Storage, the Azure SLA applies to a single VM.

 

Επιπλέον στο Azure SLA link αναφέρεται ότι: 

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%.

 

Η απορία μου είναι τι σημαίνει guaranteed Virtual Machine Connectivity? Έχει σχέση με το uptime του VM?

Τι τύπος VM απαιτείται, δηλαδή πρέπει π.χ. να χρησιμοποιήσω DS2 ή μπορώ και D2;

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Για το Single instance VM χρειάζεσαι ένα VM που να υποστιρίζει Premium Storage, δηλαδή SSD. Αυτά είναι τα VMs που έχουν S, Δηλαδή DS, FS, και επίσης κατά τη δημιουργία πρέπει να επιλέξεις SSD για OS disk και φυσικά να έχει Premium storage και για όσα data disks βάλεις αν βάλεις.

 

τώρα για το we guarantee you will have Virtual Machine Connectivity of at least 99.9% ο ορισμός βάση του https://azure.microsoft.com/en-us/support/legal/sla/virtual-machines/v1_6/είναι:

"Virtual Machine Connectivity" is bi-directional network traffic between the Virtual Machine and other IP addresses using TCP or UDP network protocols in which the Virtual Machine is configured for allowed traffic. The IP addresses can be IP addresses in the same Cloud Service as the Virtual Machine, IP addresses within the same virtual network as the Virtual Machine or public, routable IP addresses.

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