Ucs boot policy

[Hythim Ali El Hadad]

Hi,

I need to confirm what is the WWN should we use when configuring SAN target primary and secondary when configuring boot policy.

I think this should be the WWN of the SAN storage controllers

So what should be configured here assuming that we have 2 storage controllers . each controller contains 4-ports.

Thanks

[Wes Austin]

Hythim,

In short, the storage array have unique WWNN (World Wide Node Name) and then the individual ports also have their own WWPN (World Wide Port Name). You would use the unique WWPN of the target interface in your boot policy, and specify whether you would like it to be a primary or secondary target.

This guide should be very helpful.

http://jeffsaidso.com/2010/11/boot-from-san-101-with-cisco-ucs/

HTH,

Wes

[Hythim Ali El Hadad]

Great

I got it

Only to confirm this :

1. He said: Once zoning is complete, simply change the Boot Policy in the template to point to the actual WWPN of the array.

- So vhba0 go through FI-A, which is connected to 1st SAN switch which is connected to storage controller 1.

then vhba0 will have target to the 4-ports of storage controller 1

Also the same as above for vhba1 with storage controller 2 4-ports

Am I right ?

Thanks

[Walter Dey]

Yes, Correct !

[Hythim Ali El Hadad]

Thanks a lot Walter

Only the link advise the configuration required to boot from SAN

And he advised that :

Switch Tasks

1. Zone the server WWPN to a zone that includes the storage array controller’s WWPN.
2. Zone the second fabric switch as well. Note: For some operating systems (Windows for sure), you need to zone just a single path during OS installation so consider this step optional.

What he mean with the second statement

Thanks

[Walter Dey · Accepted solution]

Hi

Comment 2 has to do with the fact, that during OS installation there is not yet a multipathing driver installed, which might cause troubles: 2 paths see same lun, but are not recognized as being the same.

Specially Windows suffered from this; I think Windows 2012 fixed that issue (maybe is related to the fact, that from W2012 on, multipathing functionality is bundled with the OS). 

Cheers Walter.

[Hythim Ali El Hadad]

Great

So I'll install while configuring primary only

Then to configure a secondary after finishing the installation

[Walter Dey]

Correct !