Scale-Out File Server (SOFS) is a feature that is designed to provide scale-out file shares that are continuously available for file-based server application storage such as Hyper-V. Scale-out file shares provide the ability to share the same folder from multiple nodes of the same cluster.
In this blog we assume you already have played around with SOFS and know the basics.
There are multiple ways to connect storage to your SOFS cluster.
The most common way today is putting your SOFS cluster in front of an iSCSI or FC SAN, the upcoming method is using Storage spaces in combination with a “Just a bunch of disks” device also known as JBOD. We will cover them both in this blogpost.
If the storage is equally accessible from every node in a cluster, it is referred to as symmetric storage.
Each node can take ownership of the storage in case of maintenance or failures which provides availability.
With symmetric storage, read and writes operations can be done by every node in the cluster (also referred to as “Direct IO”) however metadata operations must be done by the owner node which is orchestrating these operations.
Example of Symmetric storage:
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