Availability Zones

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Time
3 hours 51 minutes
Difficulty
Beginner
CEU/CPE
4
Video Transcription
00:00
Let's talk about how azure provides redundancy within a region.
00:05
If you look closely at the map, you'll see that some regions have a diamond inside, and the legend says that those regions have availability zones.
00:14
Some examples are West US two. Central, US and East US.
00:19
But
00:20
what our availability zones
00:24
Availability zones are physical separate data centers within an azure region.
00:30
Unlike region pairs that are required to be at least 300 miles apart, availability zones are in a closer proximity and are connected through a private, high speed fiber optic network.
00:43
Each availability zone consists of one or more data centers equipped with independent power cooling and networking.
00:51
Similarly to the region, pairs if one's own, goes down, the other continues. Working
00:56
availability zones are important for core infrastructure services like virtual machines, managed disks. I P addresses load balancers, or SQL databases.
01:07
You can architect your application for higher availability by colic, aiding your compute storage, networking and data resources within a single availability zone and duplicating the same resources into another zone.
01:19
But be aware that there could be a cost tied to duplicating your resources in multiple zones.
01:27
There are two categories of resources that support availability zones.
01:33
Some zonal resources are VMS like managed disks or I P addresses, where you specify the availability zone at the resource creation.
01:41
And there are also other zone redundant services, like storage and SQL databases, where the platform automatically replicates across zones.
01:51
Everything we've discussed so far in this module allows us to build highly available and performant applications.
01:57
This brings us to service level agreements, which we will discuss in the next video.
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