I have a HP Proliant DL380 G5 server that I want to use as my ESXi 5 host server, for my home test network. Before installing ESXi, I configured the HP server with 2 RAID 10 mirrors (one with 2 73 GB drives and one with 2 300 GB drives) and one RAID 5 array of 3 146 GB drives) All showed up successfully in the HP bios and using HP smartstart. I can see all arrays and I have run all tests to make sure they are working. I then installed ESXi 5 and everything went smooth. I then took my laptop and pointed to the IP of the ESXi host and downloaded VSphere Client and prepared to begin building my network. I noticed under STORAGE that only the small RAID partition was showing up so I went to add more storage by selecting ADD STORAGE/Disk/LUN, I highlighted the Local VMware Disk that I knew was the 300 GB mirror and added it with VMFS-5 and it added sucessfully. I then repeated the procedure and selected my RAID 5 array and did the same thing, but this time I received the error "CALL "HostDataStoreSystem.QueryVmfsDatastoreCreateOptions "for object ha-datastoresystem" on ESXi "10.0.0.21" failed. I am kind of stuck now. I have not been able to add the extra storage to my host. Has anyone ever seen this before or have any suggestions?