ESXi 5.1 Boot From SAN and HBA Number

We are in the process of setting up a new Cisco UCS enclosure with B200 blades.

Here is what we have done.
1) Create blank boot volume.
2) used partedUtil to remove datastore1 ( This is because when the volume is cloned disk signature messages will pop up, which are not harmfull but I am trying to keep the booth image a clean a possible)

3) When the boot image is cloned and presented to a host for setup. I noticed the vmhba are labeled 3 /4 etc. I know this is becuase the hba is differennt from the install host. I found the following article on renaming vmhba's / NIC but it states it is not supported...

thoughts or suggestions
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compdigit44Asked:
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
The vmnics and vmhba numbers change because the PCI device slot may be different, between hosts,

We manipulate the configuration file to suit our needs.

Yes, it's not supported, but so are many things in life. It's not supported because people may get it incorrect, and then it fails to work, but once corrected, who is to know?

and it's not uncommon when you update from 5.1 to 5.5, they could all change, because 5.5 uses a different method to number them, compared to 5.1!
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compdigit44Author Commented:
so the vmhba number needs be changed after the LUN is presented to the host correct.. and changed to vmhba0&1 instead of 3&4
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compdigit44Author Commented:
if the hba cards were in the same slots what else would cause the vmhba numbering to change..

BTW.. always thank you to the grand master
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
The random number generator, of ESXi!

We've taken exactly the same servers, models, makes, firmware..... cloned, applied to another build, and on occasion the vmnic and vmhba numbering has changed!

If you want it to be identical, you will need to tweak!
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compdigit44Author Commented:
got it so check change the name vmhba3 to vmhba0 should work corrct.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
That is correct.
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compdigit44Author Commented:
SO these would need to be done on each host correct
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, this is why so many deployments of this nature our scripted deployments, for all these custom bits per host!

But try it and see if they change...sometimes they don't sometimes they do!
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compdigit44Author Commented:
Thanks!!!

BTW, we our UCS boot from SAN blades we decided to install ESXi on each host and not create a master boot image since it proved to be more work for us then less.
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Yes, the development time, can be long...
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compdigit44Author Commented:
so much for saving time ..... LOL
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Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
Depends on how often you do it.....there are advantages and disadvantages, but it does require development time.
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