These are some questions that should be answered when upgrading to R30.  Are you running MirrorView/Cluster Enabler (MV/CE)?  If yes, see the CLARiiON Activity Guide (CAG) for supported combinations.  Are you upgrading from Release 28 or a version of Release 29 prior to patch .012? If no, go to the next step. If yes, see Knowledgebase solution emc241683: Non-disruptive upgrade (NDU) from Release 28 or 29 to Release 29 patch 12 or later (also Release 30) may cause data unavailable situation for thin LUNs.   Release 30 fixes a known problem with thin LUN migrations documented  in emc237276 but manual interaction is still required before upgrading to that version if a fixed LUN or a thin LUN has been migrated to a thin LUN in the past. Are you upgrading from Release 28 or a version of Release 29 prior to patch .012? If no, go to the next step. If yes, see Knowledgebase solution emc241683: Non-disruptive upgrade (NDU) from Release 28 or 29 to Release 29 patch 12 or later (also Release 30) may cause data unavailable situation for thin LUNs.   Release 30 fixes a known problem with thin LUN migrations documented  in emc237276 but manual interaction is still required before upgrading to that version if a fixed LUN or a thin LUN has been migrated to a thin LUN in the past.  Other then these, i dont see anything else in the Proceedure Generator that would stop you from going from R28 to R30.  Just make sure you go to R30 .509
 Hi all. can I do a one step upgrade from Flare 28 to Flare 30, or is it necessary to upgrade to Flare 29 and then 30?  Thank you so much  Ran.
Flare 28 to Flare 30 upgrade