Single recovery of ESXi host disaster using boot USB device.

Here's the scenario. I have an ESXi host 5.0 running from a USB device on a server blade using shared virtual machine network storage and is scratch storage. I have a failure catastrophic host. Can I just plug the USB device into another blade in the same chassis and start getting my VMs back operational.

In addition, in a similar scenario if I have two devices USB with the same configuration information about them can use as a backup in case of failure of the USB device or is it config info constantly being written to the USB device which is used at the time.

At the level of the configuration, you need not, this means that as long as you take a regular backup of the config, it is ok.

But when you need to set up a backup system if a production system does not go and change the Server Blade, be sure to provide a coherent zoning and LUN masking for the blade, if VMware will see the same number of unit logic and tables as before. Same thing applies for VLANS, switches to which the new blade is connected must be configured in the same way that the old blade was (its ports must be in the same VLAN), or some VM can't see the network correctly.

1. If a system is corrupt and you just need a fresh USB boot

Plug a USB stick fresh, possibly already installed, boot, and then send the archived configuration, reboot

2. If a full blade goes wrong, you must change the server.

Put the WWNS of the HBAS in the same areas that the blade HBA has failed

Present the WWN of the HBA to the storage group

If you use the same chassis slotin, the network should be ok, but if not, put the internal ports of the switch module blade matches the new blade in the same VLAN as port internal used for blade failed.

If you use VirtualFabric / VirtualConnect on 10GBE NICs, you must set up the same way, it was too much on the failed system.

I hope that its more clear now!

Tags: VMware

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