We created a doccument for lower level support staff on this. It may help? maybe not...
Here is a cut and paste, the doccuemnt was called "Adding a second esx host"... It was never proof read or anything, but it did enable a couple of lower end support people to muddle through it an complete the task.
01/10/2009 - Add redundant ESX host
On the SAN
1. Add the new host and the new host group in one operation when you add the new host.
2. Move the current production host into the host group
3. Re-map the virtual disks to the disk group using the same LUN as it is now.
4. Note: above operation was weird on allowing the same lun to be mapped so don't freak out.
5. The Below operations take place on the new ESX host
6. Rescan HBA's on new host
7. Add storage. (The storage drives appeared and were all mapped correctly to the luns.
8. Add new virtual machine (custom)
9. Use correct same names as production esx host
10. Chose the correct disk group for the virtual machine
11. Use existing disk for the VM browse the correct disk group for the VDMK file. (c drive)
12. After VM shows up on console, add the second hard disk by once again using existing disk and browsing the correct virtual disk for the second needed VDMK file. Also make sure of any additional network cards to be added for some of our VM's
13. Note: I shutdown the VM(s) on the host that I was adding
14. Start VM(s) on new host and test.
