I've got an ESXi 5.0.0 box with 4 drives hooked up to an LSI MegaRAID 9260-4i. A few weeks back I had a bad disk in the RAID, so I pulled it out and replaced it with a slower drive I had kicking around. I recieved a new replacement and decided to replace the old one with the new one. I unplugged the old drive, plugged in the new one, fired up the system, initialized it and made it online, the array looked good from LSI's MegaRAID WebBIOS utility.
I booted up ESX and found I could not see the datastore. If I go to add storage, the LUN shows up, but ESX wants to create a new datastore with the free space on it. I also noticed in there that the datastore does not have a VMFS label.
Another weird thing is, if I refresh the storage, sometimes the datastore will show up, but the size and free space are all messed up, then it will go away again. I believe all my VMs are there, I just need to get access to them some how.
Thank you in advance for any suggestions you might have.