> ## Documentation Index
> Fetch the complete documentation index at: https://docs.vortexiq.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# TempDB Space Used %, Microsoft SQL Server KPI card, Vortex IQ Nerve Centre

> SQL Server-distinctive - sys.dm_db_file_space_usage on tempdb. Full tempdb stalls every sort/hash/version-store op server-wide.

**[Nerve Centre KPIs](/nerve-centre/kpi-cards/mssql) · [Audit Profile](/nerve-centre/kpi-cards/mssql/audit) · [Sentiment Settings](/nerve-centre/kpi-cards/mssql/sentiment)**

## At a glance

* **Category:** Capacity
* **Type:** Key Metrics
* **Chart:** gauge
* **Format:** percent
* **Time window:** RT
* **Alert trigger:** >85%

## Calculation

SQL Server-distinctive - sys.dm\_db\_file\_space\_usage on tempdb. Full tempdb stalls every sort/hash/version-store op server-wide.

## Known limitations

*Known limitations, FAQs, or reconciliation notes specific to this card. Replace this block when authored.*