As I understand it one can upgrade the firmware on a Dell Equallogic server in about 15 seconds and it can be done whilst an ESXi host is connected and VMs are running but that the iSCSI timeout value needs to be increased to avoid errors on guest VMs.
I've searched VMWare and Dell's sites but can't find a best practice quide or KB article that gives details of what to do for ESXi 5.0 in order to increase the timeout and perform a "live" firmware upgrade. Is it per-host/iSCSI initiator or per target, how do you increase it and what is a sensible value?
