Only one LUN available on new host

[MikaelPalsson]

We have an IBM Storwize 3700 SAN with two old IBM hosts connected via HBA-cards. They are on vSpehere 4.1 and work perfectly.

Two new HP Gen9 with dual HBA-cards have been installed with vSphere 5.5

On the SAN we have configured port mappings and all looks great there but only one LUN is actually recognized (there are actually 3) on one of the new servers.

The new servers have all patches and updates installed. Performing a Rescan won´t find any of the other LUN´s.

Rebooting the new servers did not help.

I kindly ask for advice.

Best regards

/Mikael

[snj]

You can check LUN mapping and Zoing in storage devices. It seems to be storage issue.

[MikaelPalsson]

Hi again,

I have now installed two new IBM HBA SAS cards. After reboot only one storage adapter gets the 3 LUNs mounted. The other adapter has no paths.

However if I swith the cables from the HBA cards when the server is up and running both cards suddenly have paths. After reboot the problem is back.

So it seems that during startup VMware will only map one card...