How Veeam Backup on vVOL can kill your PROD Env (SQL) on HPE Alletra
When a backup takes your SQL servers offline: an HPE Alletra vVol folder-space incident An incident walkthrough, the root cause, how to diagnose it, and what I'd do differently — for storage and VMware engineers. Summary Two production SQL Server VMs sharing one vVol folder on an HPE Alletra 6000 kept going offline "randomly." The trigger turned out to be the weekly Veeam backup: the VMware snapshot delta, written into the same array folder as the live volumes, pushed the folder past its space limit. NimbleOS then set every volume in the folder to non-writable to protect data — resulting in an instant SQL outage on both servers at once. The real long-term constraint wasn't the folder limit at all; it was the pool free space sitting behind it . Below is the whole journey: the symptom, the dead ends, the confirmation, and the monitoring I built so it never surprises us again. 1. The war story The symptom was maddeningly vague: every so often — not every week, not p...