Greetings, On Fri, Jan 8, 2010 at 11:01 AM, Paras pradhan <pradhanparas at gmail.com> wrote: > Hi Rajagopal, > > Do you mean to say this is typical and is resolved after we use device > mapper multipathing? > IIRC, in about 2008.11 I was tasked build a cluster with SAN. The san administrator created 3 LUNs and first time around, it showed 12 LUNs. I think it was RHEL4. Afer installation of the multipathing software from server vendor site, we got the 3 LUNs properly. But at that time I did sweat a little. Of course assuming you have two qlogic, 2 san switches etc etc. In short, most likely yes. BTW I am not a storage administrator.... Regards, Rajagopal