# \[fr-par-1\] Latencies spikes during the day following capacity increase in one of block storage cluster

- Provider: [Scaleway](https://down.guide/scaleway)
- Level: confirmed
- Impact: Degraded
- lasted 7d 3h
- started 2026-10-29 11:01 UTC
- Block Storage, Databases, Instances
- id: DWN-ec56db7d30
- Official page: https://stspg.io/kg6bgdjrf4g0

## Updates from Scaleway
### 2026-10-29 11:01 UTC: identified
Since monday 26 october on the morning, we noticed increased periodic spike of latencies following the integration of a new rack in one of our cluster. Those spikes are more noticeable during the day and are linked to writes done on some of the new disks.
This issue also impact MRDB product.
We limited the impact and currently we are working on a fix. An update will be posted at the end of the day.

### 2026-10-29 16:52 UTC: identified
We applied a fix on one of the concerned servers and monitoring it, we will have more significant metrics tomorrow.

### 2026-10-30 21:32 UTC: identified
The fix improved nvme behavior during the day and today we applied it on half of the concerned rack.
As data must be removed first to apply the fix, migrations operations are processing slowly to avoid worsening impact on latencies.
Migration operations will continue through the week-end.

### 2026-11-04 16:38 UTC: identified
We are continuing to work on a fix for this issue.

### 2026-11-04 16:40 UTC: monitoring
All new servers have been fixed. 
We are still increasing data density in the servers and monitoring any latency spikes.

### 2026-11-05 14:35 UTC: resolved
This incident has been resolved.

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