# Windows Exporter and USB drives

**URL:** <https://discuss.prometheus.io/t/windows-exporter-and-usb-drives/664>\
**Category:** Exporters and Metrics\
**Created:** [December 17, 2021, 9:40am UTC](https://discuss.prometheus.io/t/windows-exporter-and-usb-drives/664 "2021-12-17T09:40:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rdiez](https://avatars.discourse-cdn.com/v4/letter/r/7c8e57/32.png) [@rdiez](https://discuss.prometheus.io/u/rdiez)\
**Post date:** [December 17, 2021, 9:40am UTC](https://discuss.prometheus.io/t/windows-exporter-and-usb-drives/664/1 "2021-12-17T09:40:03Z")

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Hi all:

I have alert rules to warn about disks going full.

On a test PC, the Windows Exporter reports volumes C: and E: , which map to local disks. The alerts work fine there.

However, there is a “HarddiskVolume1” volume that I have to filter out manually. I don’t know where that is coming from.

The trouble is, when I attach a USB drive, it gets letter G: , and the Windows Exporter reports it as a normal disk. That does not happen with the Linux/Unix Node Exporter.

I do not want alarms for such external, removable disks. Is there a way that I can automatically filter them out? Preferably on the server side, so that I do not need to reconfigure each monitored PC.

Many thanks in advance,  
rdiez