High Disk / Fan usage 12:00 Daily - PowerEdge R630

Hi,

Having a strange issue on a Poweredge R630 which seems to be exhibiting high disk activity and full speed fans at exactly 12:00 daily.

I've monitored the system several times over this period and can see no scheduled tasks, AV scanning, other maintenance occurring. There are no alerts showing in iDrac or Windows event logs.

Is there any strange maintenance tasks at the firmware / hardware level that could cause this behaviour? Its not causing any problems and only lasts a minute or two but curious as to what it might be?

Thanks,

Jonathan