https://community.hpe.com/t5/storevirtual-storage/storage-network-link-failure/m-p/4725184#M2026 Doing a little more planning.<BR /><BR />If we have a stretch cluster where we have two sites each with some P4000 and a single subnet (to be able to use vSphere MPIO) I can foresee the following possibility:<BR /><BR />vSphere hosts able to see one another for HA heartbeat over main LAN.<BR /><BR />P4000 hosts in "split brain" if the dedicated iSCSI network link fails.<BR /><BR />When this happens the quorum should kick in so Site A stays online.<BR /><BR />At this point, the vSphere hosts in Site B can see the hosts in Site A, but can't see the storage.<BR /><BR />What's the best way to deal with this?<BR /><BR />My understanding is that vSphere HA only takes into account host failure, not storage?<BR /><BR />The best option I can see is to create an alert in vSphere for "Cannot Connect to Storage" and set the action to put the host in maintenance mode?<BR /><BR />Any other suggestions?<BR /><BR />Thanks,<BR />Paul Sat, 11 Dec 2010 19:03:02 GMT Paul Hutchings 2010-12-11T19:03:02Z https://community.hpe.com/t5/storevirtual-storage/storage-network-link-failure/m-p/4725184#M2026 Doing a little more planning.<BR /><BR />If we have a stretch cluster where we have two sites each with some P4000 and a single subnet (to be able to use vSphere MPIO) I can foresee the following possibility:<BR /><BR />vSphere hosts able to see one another for HA heartbeat over main LAN.<BR /><BR />P4000 hosts in "split brain" if the dedicated iSCSI network link fails.<BR /><BR />When this happens the quorum should kick in so Site A stays online.<BR /><BR />At this point, the vSphere hosts in Site B can see the hosts in Site A, but can't see the storage.<BR /><BR />What's the best way to deal with this?<BR /><BR />My understanding is that vSphere HA only takes into account host failure, not storage?<BR /><BR />The best option I can see is to create an alert in vSphere for "Cannot Connect to Storage" and set the action to put the host in maintenance mode?<BR /><BR />Any other suggestions?<BR /><BR />Thanks,<BR />Paul Sat, 11 Dec 2010 19:03:02 GMT https://community.hpe.com/t5/storevirtual-storage/storage-network-link-failure/m-p/4725184#M2026 Paul Hutchings 2010-12-11T19:03:02Z