VMware KB: IPMI logs in ESX/ESXi 4.x and ESXi 5.0 consume excessive disk space after a BMC reset or
Open a console to the ESX/ESXi host. For more information, see Unable to connect to an ESX host using Secure Shell (SSH) (1003807) or Using Tech Support Mode in ESXi 4.1 (1017910). Delete the sel and sel.raw files using the commands: rm /var/log/ipmi/0/se...