Faro dei controlli su quanto mi hai indicato, nel frattempo ho scoperto che l'ultima versione firmware dello storage.....
Dear Peter,
there is info in readme file for 7.83 firmware:
"Provide support for Asymmetric Logical Unit Access (ALUA) failover method
for storage subsystems with controller firmware versions 7.83.xx.xx and
higher installed. Currently, this failover method is supported for
Microsoft Windows 2003 or 2008, Linux RH 6.2 and later and SLES11 SP2 and
later, VMWare ESX4.1 U3 and later and ESXi5.0 U1 and later, Solaris 11, HP-
UX and MacOS operating system (OS) environments when an appropriate ALUA
host type is selected for the defined host and an ALUA-supported multipath
driver is installed in the host."
http://www.ibm.com/developerworks/forums/thread.jspa?messageID=14900863&tstart=0