Vmware Esxi 3.5 Configuration file for cannot be found

Hi experts,  Our Vmware ESxi 3.5 server just had a power failure when it booted up all the host is showing unknown.  When looking at the events we are seeing Configuration file for cannot be found.

Anybody know how to fix this error?

Thanks
hongning2009Asked:
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coolsport00Commented:
Are you able to see your host and VMs? Is the host 'greyed out'? Are the VMs 'greyed out'? Is there a msg by the VMs saying 'unknown'? Please provide a bit more info as to what you're seeing when you log into Virtual Center (or your host directly) with the VI Client.

~coolsport00
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
do you have a backup of the configuration of the ESXi 3.5 server? (not the VMs).

you could restore ESXi 3.5, and restore the configuration later, and the datastores will be intact.

Try hitting enter, and trying login credentials.
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hongning2009Author Commented:
using the VMWare Infrastructure Client we can login to the host, however when we try to look at the VM's it all says Unknown x (inaccesible)  where x is a number

Unfortunately we do not have a backup of the configuration of ESxi 3.5
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coolsport00Commented:
Have you tried to 'remove the VM from inventory'?, then browse to the VM folder, rt-click on the .vmx file, and select 'Add to Inventory'? (NOTE: ***DO NOT SELECT DELETE FROM DISK*** when rt-clicking on the VM).

~coolsport00
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coolsport00Commented:
Forgot to ask - Is the host also 'inaccessible', or just the VMs?
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hongning2009Author Commented:
Thanks for the quick reply,  I did not see the word inaccesible on the host, just the VM's

With the VI Client I can see Remove from Inventory but I do not see Add to Inventory, where can you find this?

Thanks
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coolsport00Commented:
You have to rt-click on the datastore, then Browse Datastore. In each of the VM folders listed, there is a .vmx file for each VM. You will need to go into each folder, rt-click on the file and select 'Add to Inventory'.

~coolsport00
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coolsport00Commented:
After you remove the 'inaccessible' VM from Inventory, you will then need to re-add it by the above instructions I've given...
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hongning2009Author Commented:
Thanks for the help found out one of the hard disk did not go online, had to redo setup and it worked.   Now that it works.

Can I ask how do you backup the Vmware server?  I know how to backup the VM's via Export Virtual Appliance but not sure how to do the server itself.
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coolsport00Commented:
Since you have a legacy version of ESXi, 'nappy-d's article explains how to do so:
http://www.experts-exchange.com/Software/VMWare/A_2297-VMWare-ESX-ESXi-How-to-Backup-your-ESXi-configuration.html
I believe this KB also explains a somewhat similar approach:
http://kb.vmware.com/kb/1000761 (states for ESX, but should work with ESXi, too)

~coolsport00
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