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Vsphere 6 or 6.5 with  512e or 4Kn drives behind a perc h730 controller

Posted on 2016-12-26
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Last Modified: 2017-01-10
I am specing out a couple of servers here and from what I read " (Advanced Format) hard drives. AF drives are also labeled as 512e or 4Kn"
are not supported with VMware 6.x.  I am not sure who to believe here. It is something I caught, yet Dell is recommending these drives for a vSphere 6 install.
Thoughts/ideas?
It appears NOT to be supported.

You guys feel comfy with 6.5 in Prod?
Thanks!!!!
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Question by:LICOMPGUY
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6 Comments
 
LVL 122
ID: 41938232
Yes, we are confident with 6.5 in production.

I would check with Dell, and get an iron clad guarantee on what they are recommending.
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Author Comment

by:LICOMPGUY
ID: 41938248
Hey Andrew

Thanks  I will, actually it was recommended by their presales engineer, but from what I read it isn't supported, I will follow up with the tomorrow.
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LVL 122
ID: 41938566
Remember that when connected to a RAID controller, a virtual disk (logical disk array) is presented to VMware vSphere.
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LVL 56

Accepted Solution

by:
andyalder earned 2000 total points
ID: 41938702
As per Andrew Hancock, the virtual disk presented to VMware is 512 bytes/sector which is what VMware wants to see, what the disks are behind the RAID controller is irrelevant to VMware. It's not much different than having AF drives in your fibre channel or iSCSI SAN, for all vSphere knows or cares they could be thousands of monkeys with notepads.

See https://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2091600 for example...

"What if 512e drives are behind a compatible RAID controller and the RAID controller is exposing the 512n drives to vSphere?
vSphere supports this configuration as long as the RAID controller is exposing the 512e drives as 512n format drives to vSphere. The RAID controller must also be listed in the vSphere compatibility guide.
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Author Closing Comment

by:LICOMPGUY
ID: 41955745
Andy - thanks so much for the valuable info and your help!
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