Is there a way to stop I/O to an iSCSI storage server and then reconnect to those LUN's without powering off and on the ESXi hosts? We need to do maintenance on the storage server but starting up the ESXi servers take a long time (~20-30 minutes) because of (I think) a bug in the version of ESXi 5 that we are running that waits a long time for dead iSCSI targets to respond.
Is it enough to just put the ESXi servers into maintenance mode and will they successfully reconnect to a iSCSI server that has been re-powered when taken out of maintenance mode?
Thanks!