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VMware Upgrade

I know a decent amount about VMware but just looking for a little bit of advice on the upgrade.  Currently the environment has 1 host with 3 Virtuals.  ESXi is currently 4.1.1 and they would like to upgrade to 5.5.  From what I see I believe they installed ESXi on the raid instead of the typical flash drive.  One question I have is, can I just remove VCenter and ESXi, slot a flash drive and install 5.5, attach the datastore and inventory the VMs?

Any recommendations are appreciated.
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Nick Rhode
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Nick Rhode
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, you can. The datastore will be found by the Installer and installation of ESXi 5.5, so MAKE sure, when it prompts and Asks the Question, do you want to preserve VMFS datastore you select YES!

Also check the Server is on the ...

Check the VMware Hardware Compatability Lists HCL here

The VMware Hardware Compatibility List is the detailed lists showing actual vendor devices that are either physically tested or are similar to the devices tested by VMware or VMware partners. Items on the list are tested with VMware products and are known to operate correctly.Devices which are not on the list may function, but will not be supported by VMware.

http://www.vmware.com/go/hcl

Here is the VMware KB on installing 5.x on USB/SD:
http://kb.vmware.com/kb/2004784
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Nick RhodeIT DirectorAuthor Commented:
Is there a specific method for removing esxi on the host since it is installed on the disks?  Never had to uninstall and it was as simple as formatting a flash drive :)
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
There is no uninstall, and you would need to be very careful if you used third party Partition editors, not to corrupt or mis-configure the existing VMFS partition.

So I would leave in place, it only takes up approx 1GB, and I would install a new virgin flash drive/sd card.
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Nick RhodeIT DirectorAuthor Commented:
That's pretty much what I figured.  I mean after all these are local storage and eventually a SAN will be in place so it wont matter anyways.

Thanks Andrew, knew I could count on you for info.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
no problems
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