A common question is how stretched clusters differ from fault domains which is a vsan feature that was introduced with vsan version 6 0.
Vsan storage policy stretched cluster.
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One of the beautiful things about vmware vsan is that it opens up the door to many different ways to store your data and protect against failure and disasters.
In vsan 6 6 a number of new enhancements were made to the vsan stretched cluster implementation.
Vsan in a stretched storage deployment accomplishes this by synchronously mirroring data across the two sites.
Vmware vsan 7 stretched cluster with dual site mirroring is configured wrapping up.
Once the configuration is done it is very important to understand and create the vsan storage policy for the stretched cluster to protect the virtual machines across the sites.
Stretched storage with vsan allows you to split the vsan cluster across two sites so that if a site fails providers are able to seamlessly fail over to the other site without any loss of data.
How vsan manages policy changes.
When working with virtual machine storage policies you must understand how the storage capabilities affect the consumption of storage capacity in the vsan cluster.
The stretched cluster can allow you to have data mirrored to two different sites so that in the event of an entire site failure the vms will simply be.
Availability attributes for vsan vm storage policies site disaster tolerance defines the data redundancy method used by stretched clusters to handle a site failure.
New concepts in vsan stretched clusters.
The pftt that was designated at the local site prior to enabling a stretched cluster is now set across sites.
We are done with creating the vsan stretched cluster.
From a policy perspective we now have the ability to configure both a pftt primary failures to tolerate across sites and an sftt secondary failures to tolerate within sites.
You can assign storage policies when you create or reconfigure virtual machines.
We will discuss vsan stretched cluster storage policy in the upcoming posts.
Vmware vsan stretched cluster guide.
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