Upgrade/Replace Dell Poweredge R720 storage backplane

I have a Dell R720 (Server 2012 R2) with an 8 slot backplane and a PERC H710 raid controller.  I'd like to replace the 8 slot backplane with a 16 slot.  The raid controller should be fine with it.  My question is... Will this be enough of a change requiring an OS reinstall, or should it just see it and make the appropriate updates?  The backplane config is done prior to the OS loading doesn't it?

The other option is to add a second 8 slot backplane, but I believe having two backplanes requires 2 controller cards.

Anyone do this, or have experience with it.  Appreciate your feedback.

Thanks
epworthcfsAsked:
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andyalderConnect With a Mentor Commented:
If you can get hold of the backplane and fittings then the controller and OS shouldn't need reconfiguring as the PERC supports drive roaming.

What are you ordering and from whom since Dell don't sell the 16 slot expander backplane as an upgrade option.
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Max SandoConnect With a Mentor Storage EngineerCommented:
I agree with Andyalder. You will have to import your drive config at boot with the PERC, but other then that it should boot fine. It will give you a warning that the current config is invalid or missing, and if you want to import.
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andyalderConnect With a Mentor Commented:
No changing the controller so the controller config should be the same as on the disks so no need to import I think, not that it matters since the hard bit is getting the parts.
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epworthcfsAuthor Commented:
I was going to get the parts from a aftermarket reseller, most likely pulled from another server.  If I add a second 8 slot backplane, will I need another controller?
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Max SandoConnect With a Mentor Storage EngineerCommented:
If it fits in the slot, then you will just need a cable. I am guessing there will be an open port on the perc card, but you will have to look.
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andyalderConnect With a Mentor Commented:
A second backplane would need a second controller, I'm pretty sure Dell don't have a PERC with 4 internal connectors.
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epworthcfsAuthor Commented:
Thanks for your input.
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