> ## 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.

# Last Repair Age (hours), Apache Cassandra KPI card, Vortex IQ Nerve Centre

> Repair recency vs gc_grace_seconds (default 10d). Stale repair = zombie data / resurrected deletes risk.

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

## At a glance

* **Category:** Replication & Repair
* **Type:** Supporting Metrics
* **Chart:** kpi
* **Format:** number
* **Time window:** RT
* **Alert trigger:** >240h (10d > gc\_grace)

## Calculation

Repair recency vs gc\_grace\_seconds (default 10d). Stale repair = zombie data / resurrected deletes risk.

## Known limitations

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