changing ALUA requires host to be rebooted. The systems that are members of the same storage group , are they part of the same cluster ? If yes ..why so many different flavors of ESX in the same cluster ?
Hi ,  We have VNX 7500 with one Storage Group contain multiple ESX host (ESX 4.0, ESXi 4.1 and ESXi 5.0) In that we configured failover mode set 1. And now we asked to change the failover mode to 4 (ALUA).   Can anyone confirm the failover mode 1 to 4 ALUA is an online activity?  Or do we need ESX host reboot to get the setting effect. if Yes let me know its for all ESX / (ESX 4.0, ESXi 4.1 and ESXi 5.0)   And also confirm do we need a separate Storage Group for ESX4.0 and ESXi5.   Configuration   VNX 7500 (Block)software ver: 5.31.000.5.704   Thanks in Advance.
Failover mode 1 to 4 ALUA is online activity?