topic Disappearing LUNs? in ONTAP Discussions https://community.netapp.com/t5/ONTAP-Discussions/Disappearing-LUNs/m-p/8686#M1970 <HTML><HEAD></HEAD><BODY><P>Did an ONTAP upgrade from 7.2.1.1 to 7.3.3, went fairly smooth.&nbsp; When I rebooted my Windows 2003 cluster I started seeing some weird LUN behavior.&nbsp; A LUN was listed, but showed that it wasn't formatted or accessible.&nbsp; I unmapped the LUN, remapped it, rescanned, all the normal troubleshooting activities without success.&nbsp; Finally rebooted the cluster and that LUN came back online and another one now is exhibiting the same symptoms.&nbsp; this seems a little bizzaro to me, any suggestions?</P><P></P><P>Fred.</P></BODY></HTML> Thu, 05 Jun 2025 07:00:50 GMT steinhorst 2025-06-05T07:00:50Z Disappearing LUNs? https://community.netapp.com/t5/ONTAP-Discussions/Disappearing-LUNs/m-p/8686#M1970 <HTML><HEAD></HEAD><BODY><P>Did an ONTAP upgrade from 7.2.1.1 to 7.3.3, went fairly smooth.&nbsp; When I rebooted my Windows 2003 cluster I started seeing some weird LUN behavior.&nbsp; A LUN was listed, but showed that it wasn't formatted or accessible.&nbsp; I unmapped the LUN, remapped it, rescanned, all the normal troubleshooting activities without success.&nbsp; Finally rebooted the cluster and that LUN came back online and another one now is exhibiting the same symptoms.&nbsp; this seems a little bizzaro to me, any suggestions?</P><P></P><P>Fred.</P></BODY></HTML> Thu, 05 Jun 2025 07:00:50 GMT https://community.netapp.com/t5/ONTAP-Discussions/Disappearing-LUNs/m-p/8686#M1970 steinhorst 2025-06-05T07:00:50Z Re: Disappearing LUNs? https://community.netapp.com/t5/ONTAP-Discussions/Disappearing-LUNs/m-p/8691#M1972 <HTML><HEAD></HEAD><BODY><P>Just rebooted the cluster... again, and this time everything came back online ok.&nbsp; Going to chalk this one up to Murphy and chance unless there is someone out there who knows what might have happened.</P></BODY></HTML> Sat, 05 Feb 2011 17:35:28 GMT https://community.netapp.com/t5/ONTAP-Discussions/Disappearing-LUNs/m-p/8691#M1972 steinhorst 2011-02-05T17:35:28Z