https://community.hpe.com/t5/storevirtual-storage/dsm-mpio-compatibility/m-p/6004481#M6530 <P>generally not much, but sometimes you can lose connectivity on that computer.&nbsp; I've never had a problem if I've missed a computer before an upgrade, but I guess it might matter one day.</P> Thu, 21 Mar 2013 13:52:40 GMT oikjn 2013-03-21T13:52:40Z https://community.hpe.com/t5/storevirtual-storage/dsm-mpio-compatibility/m-p/6004377#M6528 <P>If you don't upgrade the DSM MPIO on all of your hosts prior to upgrading SAN/iQ - what actually happens?&nbsp;</P><P>&nbsp;</P><P>&nbsp;</P> Thu, 21 Mar 2013 12:47:39 GMT https://community.hpe.com/t5/storevirtual-storage/dsm-mpio-compatibility/m-p/6004377#M6528 Paul Hutchings 2013-03-21T12:47:39Z https://community.hpe.com/t5/storevirtual-storage/dsm-mpio-compatibility/m-p/6004481#M6530 <P>generally not much, but sometimes you can lose connectivity on that computer.&nbsp; I've never had a problem if I've missed a computer before an upgrade, but I guess it might matter one day.</P> Thu, 21 Mar 2013 13:52:40 GMT https://community.hpe.com/t5/storevirtual-storage/dsm-mpio-compatibility/m-p/6004481#M6530 oikjn 2013-03-21T13:52:40Z