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docs: clarify Hyper-V DataStore, Cluster Shared Volumes and storage pools (#2711)

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Signed-off-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
Co-authored-by: EisenbergD <dominik.eisenberg@beiersdorf.com>
Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
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Dominik Eisenberg
2026-10-15 16:45:22 +02:00
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co-authored by EisenbergD Claude Opus 5.5
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docs/collector.hyperv.md
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@@ -21,9 +21,21 @@ Scrapes publish the values of the last refresh. Default: `5m`.
## Metrics
### Hyper-V Datastore
### Hyper-V Datastore Metrics Documentation
This documentation outlines the available metrics for monitoring Hyper-V Datastore performance and resource usage using Prometheus. All metrics are prefixed with `windows_hyperv_datastore`.
Sub-collector `datastore`. It reads the `Hyper-V DataStore` performance counter set. Each virtual machine has its own
instances, named after the VM GUID, for example `<VM GUID> configuration file` and `<VM GUID> runtime file`. They
describe the files in which Hyper-V keeps the configuration and runtime state of the virtual machine (`.vmcx`,
`.vmrs`, see [virtual machine file types](https://learn.microsoft.com/en-us/windows-server/virtualization/hyper-v/deploy/upgrade-virtual-machine-version-in-hyper-v-on-windows-or-windows-server)), for example their fragmentation, free space in their tables and the reads and writes to them. All metrics are
prefixed with `windows_hyperv_datastore`.
> [!NOTE]
> A Hyper-V DataStore is not a storage volume, unlike a datastore in VMware vSphere. These metrics don't report the
> capacity or usage of the volumes that hold the virtual machines. For Cluster Shared Volumes, use the `shared_volumes`
> sub-collector of the [`mscluster`](collector.mscluster.md) collector. For volumes of a single host, use the
> [`logical_disk`](collector.logical_disk.md) collector.
>
> The counter set has no instances on a host without virtual machines. The sub-collector then exports no
> `windows_hyperv_datastore_*` series and doesn't report an error.
| Metric Name | Description | Type | Labels |
|------------------------------------------------------------------------|---------------------------------------------------------------------------------|---------|-----------|