I have downloaded ESXi 4.0 to play with HA & DRS etc on some not very new hardware that I have managed to cobble together. I have two ESX hosts, Virtual Center and a NAS box.
Unfortunately the ESX hosts only have 2Gb of RAM each.
When I put the hosts in the cluster and look at the available cluster resources I only have 319Mb of RAM available - even though there are no VMs running.
Each ESX host has more than 1Gb of RAM available - I am wondering what the disconnect is here?
This apparent lack or RAM means that HA does not have enough resources to configure a HA cluster for example ...
ESXi 4 requires 2GB for itself. Actually some less than 2GB, but make it as a starting point.
All the memory you plan to give to VMs - should be above 2GB.
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VMware vExpert '2009
Check for memory reservation.
I've got the same problem with the beta, but I've resolved using more RAM (with 3-4 GB works fine).
Remember also that the new vmkernel use more RAM than version 3.x.
Andre
ESXi 4 requires 2GB for itself. Actually some less than 2GB, but make it as a starting point.
All the memory you plan to give to VMs - should be above 2GB.
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VMware vExpert '2009
This is to be expected as the VMkernel is now 64bit and uses 2GB
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Thanks for the replies everyone - I thought that 4.0 might use more RAM but was not aware that this was close to the 2Gb mark.
I'll just have to try again when I have boxes that are up to the job