The intervention will be a transparent upgrade of OnTapp storage software to release 8.0.2P6. The intervention is required to improve diagnostics of recent problems we were observing on one of the storage boxes. The storage box internals were completely replaced in last few weeks during other transparent interventions, but the problem still persists and affects mostly CMSR and LCGR production databases as well as COMPR database. We would like to make sure all the storage is running fine before LHC startup, thus the late notification about the intervention.
Intervention time:
Wednesday 7th of March 2012 from 15:30 till 16:30
The intervention is expected to be transparent, however single database slowdowns may occur during the intervention.