XenServer iSCSI LUNs not mapping

Having issues with vnx 5600. I was able to figure out the VNX 5300 in an obscure thread in 2012. Now. Issues withe vnx 5600 and XenServer 5.6 and 6.0.2. Weird happenings with LUN added to Storage Group through unisphere. Any guidance? No issue with physical and Sphere 5.5.

The XenDesktop Guy

I’m not a big fan of iSCSI – probably a hangover from years of fibre channel experience before ethernet based storage networks became commonplace – and the issue I ran into today didn’t do anything to increase my comfort level.  My experience to date is that fibre channel storage systems seem to “just work” whereas iSCSI can be finnicky and temperamental.

A customer had purchased a new HP P2000 G3 iSCSI storage array to provide a shared storage repository for XenServer HA for the blades hosting their XenDesktop farm, in addition to providing a storage location for templates and a handful of test VMs.  I configured two ports on each P2000 controller and assigned two NICs from each XenServer blade for iSCSI traffic as per the XenServer multipathing best practice guide which you can find at CTX136354.  I enabled multipathing on all hosts in the farm and proceeded to…

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