You can assign storage policies when you create or reconfigure virtual machines.
Vsan storage policy stretched cluster.
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.
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.
The pftt that was designated at the local site prior to enabling a stretched cluster is now set across sites.
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Vmware vsan stretched cluster guide.
New concepts in vsan stretched clusters.
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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.
A common question is how stretched clusters differ from fault domains which is a vsan feature that was introduced with vsan version 6 0.
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.
For more information about designing and sizing considerations of storage policies see designing and sizing a vsan cluster in administering vmware vsan.
When working with virtual machine storage policies you must understand how the storage capabilities affect the consumption of storage capacity in the vsan cluster.
Storage policies have availability attributes and advanced attributes.
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.
How vsan manages policy changes.
Availability attributes for vsan vm storage policies site disaster tolerance defines the data redundancy method used by stretched clusters to handle a site failure.
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.
We will discuss vsan stretched cluster storage policy in the upcoming posts.
