I think so, because the WWN is still the same. Upgrade to ESXi5.1 -> rescan the HBA bus, that's it. Better to make sure the host configuration are all synced to the array to avoid any potential problem.
Hi,  Can anyone here please clarify if there is any adverse impact in the Storage Array level or the datastore level when I'm doing complete server rebuild with different name and different IP address ?  My understanding is that the SAN Array will communicate with the HBA WWN so no need to worry about ? feel free to correct me if I'm wrong.
Vmware Server rebuild effect in the existing SAN & LUN operations