Slow I/O Performance

Incident Report for NeSI

Identified

Our storage system is currently very full and this is forcing the backend object storage to undertake some urgent administration by way of defragmentation. This increased load is having a detrimental affect on I/O performance, especially read I/O, and this is likely to continue for some days. We are urgently looking at ways to mitigate this. Researchers could help alleviate this in the short term by cleaning up any unwanted files and data as soon as possible please.

Posted Nov 21, 2025 - 12:29 NZDT

This incident affects: Data Transfer and HPC Storage.