I am having a funny problem. I have a 3 node HA/DRS cluster running ESX 3.5 U2, on HP Proliant hardware, with Qlogic 2532 HBA's, connecting through a HP switch to MSA 2000FC SAN.
Each ESX box is congfigured the same way, 2 HBA's, each with Dual paths to the storage.
I had to "borrow" a Fibre cable as a backup server had a torn cable, the backup server is on different fabric to the ESX boxes.
When I recieved a new cable, I placed the original fibre cable in the ESX box, connected it to the switch (got lights and port is active), however the ESX server cannot access the storage from that HBA.
Nothing has changed re zoning, port config, HBA config, ESX paths etc...
Has anyone seen this before?
What could be causing this issue?
I believe the storage share which is not available now, is already a VMFS partition used earlier.
If yes, try to do a refresh in the datastore area, it should automatically come up there.
Once I had similar issue, and had to reboot the machine finally after trying all the other ways.
Reboot solved the problem.
Good luck for you