Cluster Shared Volume (CSV) is a Windows Failover Cluster volume that can be accessed simultaneously by multiple nodes and is commonly used by Hyper-V.
Simple definition
Cluster Shared Volume (CSV) is a Windows Failover Cluster volume that can be accessed simultaneously by multiple nodes and is commonly used by Hyper-V. It belongs to the Windows / Windows Server vocabulary and is useful when reading architecture diagrams, product documentation, logs, or administration procedures.
What is it used for?
Its main purpose is to allow multiple cluster hosts to access shared storage while virtual machines move between nodes. The practical value depends on the surrounding architecture, security model, and operational requirements.
How does it work?
CSV provides a consistent namespace under C:ClusterStorage and coordinates access through the cluster, using direct or redirected paths depending on storage/network state.
Key points
- Scope: A Windows Failover Cluster volume that can be accessed simultaneously by multiple nodes and is commonly used by Hyper-V.
- Operational goal: Allow multiple cluster hosts to access shared storage while virtual machines move between nodes.
- Implementation: CSV provides a consistent namespace under C:ClusterStorage and coordinates access through the cluster, using direct or redirected paths depending on storage/network state.
Points to watch
Monitor Redirected Access states, storage connectivity, and cluster networks; degradation can sharply increase latency.
In short
Cluster Shared Volume (CSV) = a Windows Failover Cluster volume that can be accessed simultaneously by multiple nodes and is commonly used by Hyper-V. Use it when you need to allow multiple cluster hosts to access shared storage while virtual machines move between nodes.